/www/wptmonitor/jpgraph/jpgraph.php

<?php

//=======================================================================

// File:	JPGRAPH.PHP

// Description:	PHP Graph Plotting library. Base module.

// Created: 	2001-01-08

// Ver:		$Id: jpgraph.php,v 1.1 2009/04/22 16:39:35 pc_geek Exp $

//

// Copyright (c) Aditus Consulting. All rights reserved.

//========================================================================



require_once('jpg-config.inc.php');

require_once('jpgraph_gradient.php');

require_once('jpgraph_errhandler.inc.php');

require_once('jpgraph_ttf.inc.php');



// Version info

DEFINE('JPG_VERSION','2.3.3');



// Minimum required PHP version

DEFINE('MIN_PHPVERSION','5.1.0');



// Should the image be a truecolor image? 

DEFINE('USE_TRUECOLOR',true);



//------------------------------------------------------------------------

// Automatic settings of path for cache and font directory

// if they have not been previously specified

//------------------------------------------------------------------------

if(USE_CACHE) {

    if (!defined('CACHE_DIR')) {

	if ( strstr( PHP_OS, 'WIN') ) {

	    if( empty($_SERVER['TEMP']) ) {

		$t = new ErrMsgText();

		$msg = $t->Get(11,$file,$lineno);

		die($msg);

	    }

	    else {

		DEFINE('CACHE_DIR', $_SERVER['TEMP'] . '/');

	    }

	} else {

	    DEFINE('CACHE_DIR','/tmp/jpgraph_cache/');

	}

    }

}

elseif( !defined('CACHE_DIR') ) {

    DEFINE('CACHE_DIR', '');

}



if (!defined('TTF_DIR')) {

    if (strstr( PHP_OS, 'WIN') ) {

	$sroot = getenv('SystemRoot');

        if( empty($sroot) ) {

	    $t = new ErrMsgText();

	    $msg = $t->Get(12,$file,$lineno);

	    die($msg);

        }

	else {

	  DEFINE('TTF_DIR', $sroot.'/fonts/');

        }

    } else {

	DEFINE('TTF_DIR','/usr/X11R6/lib/X11/fonts/truetype/');

    }

}



if (!defined('MBTTF_DIR')) {

    DEFINE('MBTTF_DIR','/usr/share/fonts/ja/TrueType/');

}



//------------------------------------------------------------------

// Constants which are used as parameters for the method calls

//------------------------------------------------------------------





// Tick density

DEFINE("TICKD_DENSE",1);

DEFINE("TICKD_NORMAL",2);

DEFINE("TICKD_SPARSE",3);

DEFINE("TICKD_VERYSPARSE",4);



// Side for ticks and labels. 

DEFINE("SIDE_LEFT",-1);

DEFINE("SIDE_RIGHT",1);

DEFINE("SIDE_DOWN",-1);

DEFINE("SIDE_BOTTOM",-1);

DEFINE("SIDE_UP",1);

DEFINE("SIDE_TOP",1);



// Legend type stacked vertical or horizontal

DEFINE("LEGEND_VERT",0);

DEFINE("LEGEND_HOR",1);



// Mark types for plot marks

DEFINE("MARK_SQUARE",1);

DEFINE("MARK_UTRIANGLE",2);

DEFINE("MARK_DTRIANGLE",3);

DEFINE("MARK_DIAMOND",4);

DEFINE("MARK_CIRCLE",5);

DEFINE("MARK_FILLEDCIRCLE",6);

DEFINE("MARK_CROSS",7);

DEFINE("MARK_STAR",8);

DEFINE("MARK_X",9);

DEFINE("MARK_LEFTTRIANGLE",10);

DEFINE("MARK_RIGHTTRIANGLE",11);

DEFINE("MARK_FLASH",12);

DEFINE("MARK_IMG",13);

DEFINE("MARK_FLAG1",14);

DEFINE("MARK_FLAG2",15);

DEFINE("MARK_FLAG3",16);

DEFINE("MARK_FLAG4",17);



// Builtin images

DEFINE("MARK_IMG_PUSHPIN",50);

DEFINE("MARK_IMG_SPUSHPIN",50);

DEFINE("MARK_IMG_LPUSHPIN",51);

DEFINE("MARK_IMG_DIAMOND",52);

DEFINE("MARK_IMG_SQUARE",53);

DEFINE("MARK_IMG_STAR",54);

DEFINE("MARK_IMG_BALL",55);

DEFINE("MARK_IMG_SBALL",55);

DEFINE("MARK_IMG_MBALL",56);

DEFINE("MARK_IMG_LBALL",57);

DEFINE("MARK_IMG_BEVEL",58);



// Inline defines

DEFINE("INLINE_YES",1);

DEFINE("INLINE_NO",0);



// Format for background images

DEFINE("BGIMG_FILLPLOT",1);

DEFINE("BGIMG_FILLFRAME",2);

DEFINE("BGIMG_COPY",3);

DEFINE("BGIMG_CENTER",4);



// Depth of objects

DEFINE("DEPTH_BACK",0);

DEFINE("DEPTH_FRONT",1);



// Direction

DEFINE("VERTICAL",1);

DEFINE("HORIZONTAL",0);





// Axis styles for scientific style axis

DEFINE('AXSTYLE_SIMPLE',1);

DEFINE('AXSTYLE_BOXIN',2);

DEFINE('AXSTYLE_BOXOUT',3);

DEFINE('AXSTYLE_YBOXIN',4);

DEFINE('AXSTYLE_YBOXOUT',5);



// Style for title backgrounds

DEFINE('TITLEBKG_STYLE1',1);

DEFINE('TITLEBKG_STYLE2',2);

DEFINE('TITLEBKG_STYLE3',3);

DEFINE('TITLEBKG_FRAME_NONE',0);

DEFINE('TITLEBKG_FRAME_FULL',1);

DEFINE('TITLEBKG_FRAME_BOTTOM',2);

DEFINE('TITLEBKG_FRAME_BEVEL',3);

DEFINE('TITLEBKG_FILLSTYLE_HSTRIPED',1);

DEFINE('TITLEBKG_FILLSTYLE_VSTRIPED',2);

DEFINE('TITLEBKG_FILLSTYLE_SOLID',3);



// Style for background gradient fills

DEFINE('BGRAD_FRAME',1);

DEFINE('BGRAD_MARGIN',2);

DEFINE('BGRAD_PLOT',3);



// Width of tab titles

DEFINE('TABTITLE_WIDTHFIT',0);

DEFINE('TABTITLE_WIDTHFULL',-1);



// Defines for 3D skew directions

DEFINE('SKEW3D_UP',0);

DEFINE('SKEW3D_DOWN',1);

DEFINE('SKEW3D_LEFT',2);

DEFINE('SKEW3D_RIGHT',3);



// Line styles

DEFINE('LINESTYLE_SOLID',1);

DEFINE('LINESTYLE_DOTTED',2);

DEFINE('LINESTYLE_DASHED',3);

DEFINE('LINESTYLE_LONGDASH',4);



// For internal use only

DEFINE("_JPG_DEBUG",false);

DEFINE("_FORCE_IMGTOFILE",false);

DEFINE("_FORCE_IMGDIR",'/tmp/jpgimg/');



require_once('gd_image.inc.php');



function CheckPHPVersion($aMinVersion)

{

    list($majorC, $minorC, $editC) = split('[/.-]', PHP_VERSION);

    list($majorR, $minorR, $editR) = split('[/.-]', $aMinVersion);

  

    if ($majorC != $majorR) return false;

    if ($majorC < $majorR) return false;

    // same major - check ninor

    if ($minorC > $minorR) return true;

    if ($minorC < $minorR) return false;

    // and same minor

    if ($editC  >= $editR)  return true;

    return true;

}



//

// Make sure PHP version is high enough

//

if( !CheckPHPVersion(MIN_PHPVERSION) ) {

    JpGraphError::RaiseL(13,PHP_VERSION,MIN_PHPVERSION);

    die();

}





//

// Make GD sanity check

//

if( !function_exists("imagetypes") || !function_exists('imagecreatefromstring') ) {

    JpGraphError::RaiseL(25001);

//("This PHP installation is not configured with the GD library. Please recompile PHP with GD support to run JpGraph. (Neither function imagetypes() nor imagecreatefromstring() does exist)");

}



//

// Setup PHP error handler

//

function _phpErrorHandler($errno,$errmsg,$filename, $linenum, $vars) {

    // Respect current error level

    if( $errno & error_reporting() ) {

	JpGraphError::RaiseL(25003,basename($filename),$linenum,$errmsg); 

    }

}



if( INSTALL_PHP_ERR_HANDLER ) {

    set_error_handler("_phpErrorHandler");

}



//

//Check if there were any warnings, perhaps some wrong includes by the

//user

//

if( isset($GLOBALS['php_errormsg']) && CATCH_PHPERRMSG && 

    !preg_match('/|Deprecated|/i', $GLOBALS['php_errormsg']) ) {

    JpGraphError::RaiseL(25004,$GLOBALS['php_errormsg']);

}





// Useful mathematical function

function sign($a) {return $a >= 0 ? 1 : -1;}



// Utility function to generate an image name based on the filename we

// are running from and assuming we use auto detection of graphic format

// (top level), i.e it is safe to call this function

// from a script that uses JpGraph

function GenImgName() {

    // Determine what format we should use when we save the images

    $supported = imagetypes();

    if( $supported & IMG_PNG )	   $img_format="png";

    elseif( $supported & IMG_GIF ) $img_format="gif";

    elseif( $supported & IMG_JPG ) $img_format="jpeg";

    elseif( $supported & IMG_WBMP ) $img_format="wbmp";

    elseif( $supported & IMG_XPM ) $img_format="xpm";





    if( !isset($_SERVER['PHP_SELF']) )

	JpGraphError::RaiseL(25005);

//(" Can't access PHP_SELF, PHP global variable. You can't run PHP from command line if you want to use the 'auto' naming of cache or image files.");

    $fname = basename($_SERVER['PHP_SELF']);

    if( !empty($_SERVER['QUERY_STRING']) ) {

	$q = @$_SERVER['QUERY_STRING'];

	$fname .= '_'.preg_replace("/\W/", "_", $q).'.'.$img_format;

    }

    else {

	$fname = substr($fname,0,strlen($fname)-4).'.'.$img_format;

    }

    return $fname;

}





//===================================================

// CLASS JpgTimer

// Description: General timing utility class to handle

// time measurement of generating graphs. Multiple

// timers can be started.

//===================================================

class JpgTimer {

    private $start, $idx;	

//---------------

// CONSTRUCTOR

    function JpgTimer() {

	$this->idx=0;

    }



//---------------

// PUBLIC METHODS	



    // Push a new timer start on stack

    function Push() {

	list($ms,$s)=explode(" ",microtime());	

	$this->start[$this->idx++]=floor($ms*1000) + 1000*$s;	

    }



    // Pop the latest timer start and return the diff with the

    // current time

    function Pop() {

	assert($this->idx>0);

	list($ms,$s)=explode(" ",microtime());	

	$etime=floor($ms*1000) + (1000*$s);

	$this->idx--;

	return $etime-$this->start[$this->idx];

    }

} // Class



$gJpgBrandTiming = BRAND_TIMING;

//===================================================

// CLASS DateLocale

// Description: Hold localized text used in dates

//===================================================

class DateLocale {

 

    public $iLocale = 'C'; // environmental locale be used by default

    private $iDayAbb = null, $iShortDay = null, $iShortMonth = null, $iMonthName = null;



//---------------

// CONSTRUCTOR	

    function DateLocale() {

	settype($this->iDayAbb, 'array');

	settype($this->iShortDay, 'array');

	settype($this->iShortMonth, 'array');

	settype($this->iMonthName, 'array');





	$this->Set('C');

    }



//---------------

// PUBLIC METHODS	

    function Set($aLocale) {

	if ( in_array($aLocale, array_keys($this->iDayAbb)) ){ 

	    $this->iLocale = $aLocale;

	    return TRUE;  // already cached nothing else to do!

	}



	$pLocale = setlocale(LC_TIME, 0); // get current locale for LC_TIME



	if (is_array($aLocale)) {

	    foreach ($aLocale as $loc) {

		$res = @setlocale(LC_TIME, $loc);

		if ( $res ) {

		    $aLocale = $loc;

		    break;

		}

	    }

	}

	else {

	    $res = @setlocale(LC_TIME, $aLocale);

	}



	if ( ! $res ){

	    JpGraphError::RaiseL(25007,$aLocale);

//("You are trying to use the locale ($aLocale) which your PHP installation does not support. Hint: Use '' to indicate the default locale for this geographic region.");

	    return FALSE;

	}

 

	$this->iLocale = $aLocale;

	for ( $i = 0, $ofs = 0 - strftime('%w'); $i < 7; $i++, $ofs++ ){

	    $day = strftime('%a', strtotime("$ofs day"));

	    $day[0] = strtoupper($day[0]);

	    $this->iDayAbb[$aLocale][]= $day[0];

	    $this->iShortDay[$aLocale][]= $day;

	}



	for($i=1; $i<=12; ++$i) {

	    list($short ,$full) = explode('|', strftime("%b|%B",strtotime("2001-$i-01")));

	    $this->iShortMonth[$aLocale][] = ucfirst($short);

	    $this->iMonthName [$aLocale][] = ucfirst($full);

	}

		

	setlocale(LC_TIME, $pLocale);



	return TRUE;

    }





    function GetDayAbb() {

	return $this->iDayAbb[$this->iLocale];

    }

	

    function GetShortDay() {

	return $this->iShortDay[$this->iLocale];

    }



    function GetShortMonth() {

	return $this->iShortMonth[$this->iLocale];

    }

	

    function GetShortMonthName($aNbr) {

	return $this->iShortMonth[$this->iLocale][$aNbr];

    }



    function GetLongMonthName($aNbr) {

	return $this->iMonthName[$this->iLocale][$aNbr];

    }



    function GetMonth() {

	return $this->iMonthName[$this->iLocale];

    }

}



$gDateLocale = new DateLocale();

$gJpgDateLocale = new DateLocale();



//=======================================================

// CLASS Footer

// Description: Encapsulates the footer line in the Graph

//=======================================================

class Footer {

    public $iLeftMargin = 3, $iRightMargin = 3, $iBottomMargin = 3 ;

    public $left,$center,$right;



    function Footer() {

	$this->left = new Text();

	$this->left->ParagraphAlign('left');

	$this->center = new Text();

	$this->center->ParagraphAlign('center');

	$this->right = new Text();

	$this->right->ParagraphAlign('right');

    }



    function SetMargin($aLeft=3,$aRight=3,$aBottom=3) {

	$this->iLeftMargin = $aLeft;

	$this->iRightMargin = $aRight;

	$this->iBottomMargin = $aBottom;

    }



    function Stroke($aImg) {

	$y = $aImg->height - $this->iBottomMargin;

	$x = $this->iLeftMargin;

	$this->left->Align('left','bottom');

	$this->left->Stroke($aImg,$x,$y);



	$x = ($aImg->width - $this->iLeftMargin - $this->iRightMargin)/2;

	$this->center->Align('center','bottom');

	$this->center->Stroke($aImg,$x,$y);



	$x = $aImg->width - $this->iRightMargin;

	$this->right->Align('right','bottom');

	$this->right->Stroke($aImg,$x,$y);

    }

}





//===================================================

// CLASS Graph

// Description: Main class to handle graphs

//===================================================

class Graph {

    public $cache=null;		// Cache object (singleton)

    public $img=null;			// Img object (singleton)

    public $plots=array();	// Array of all plot object in the graph (for Y 1 axis)

    public $y2plots=array();// Array of all plot object in the graph (for Y 2 axis)

    public $ynplots=array();

    public $xscale=null;		// X Scale object (could be instance of LinearScale or LogScale

    public $yscale=null,$y2scale=null, $ynscale=array();

    public $iIcons = array();      // Array of Icons to add to 

    public $cache_name;		// File name to be used for the current graph in the cache directory

    public $xgrid=null;		// X Grid object (linear or logarithmic)

    public $ygrid=null,$y2grid=null; //dito for Y

    public $doframe=true,$frame_color=array(0,0,0), $frame_weight=1;	// Frame around graph

    public $boxed=false, $box_color=array(0,0,0), $box_weight=1;		// Box around plot area

    public $doshadow=false,$shadow_width=4,$shadow_color=array(102,102,102);	// Shadow for graph

    public $xaxis=null;		// X-axis (instane of Axis class)

    public $yaxis=null, $y2axis=null, $ynaxis=array();	// Y axis (instance of Axis class)

    public $margin_color=array(200,200,200);	// Margin color of graph

    public $plotarea_color=array(255,255,255);	// Plot area color

    public $title,$subtitle,$subsubtitle; 	// Title and subtitle(s) text object

    public $axtype="linlin";	// Type of axis

    public $xtick_factor,$ytick_factor;	// Factor to determine the maximum number of ticks depending on the plot width

    public $texts=null, $y2texts=null;		// Text object to ge shown in the graph

    public $lines=null, $y2lines=null;

    public $bands=null, $y2bands=null;

    public $text_scale_off=0, $text_scale_abscenteroff=-1;	// Text scale in fractions and for centering bars

    public $background_image="",$background_image_type=-1,$background_image_format="png";

    public $background_image_bright=0,$background_image_contr=0,$background_image_sat=0;

    public $image_bright=0, $image_contr=0, $image_sat=0;

    public $inline;

    public $showcsim=0,$csimcolor="red"; //debug stuff, draw the csim boundaris on the image if <>0

    public $grid_depth=DEPTH_BACK;	// Draw grid under all plots as default

    public $iAxisStyle = AXSTYLE_SIMPLE;

    public $iCSIMdisplay=false,$iHasStroked = false;

    public $footer;

    public $csimcachename = '', $csimcachetimeout = 0, $iCSIMImgAlt='';

    public $iDoClipping = false;

    public $y2orderback=true;

    public $tabtitle;

    public $bkg_gradtype=-1,$bkg_gradstyle=BGRAD_MARGIN;

    public $bkg_gradfrom='navy', $bkg_gradto='silver';

    public $titlebackground = false;

    public $titlebackground_color = 'lightblue',

	$titlebackground_style = 1,

	$titlebackground_framecolor = 'blue',

	$titlebackground_framestyle = 2,

	$titlebackground_frameweight = 1,

	$titlebackground_bevelheight = 3 ;

    public $titlebkg_fillstyle=TITLEBKG_FILLSTYLE_SOLID;

    public $titlebkg_scolor1='black',$titlebkg_scolor2='white';

    public $framebevel = false, $framebeveldepth = 2 ;

    public $framebevelborder = false, $framebevelbordercolor='black';

    public $framebevelcolor1='white@0.4', $framebevelcolor2='black@0.4';

    public $background_image_mix=100;

    public $background_cflag = '';

    public $background_cflag_type = BGIMG_FILLPLOT;

    public $background_cflag_mix = 100;

    public $iImgTrans=false,

	$iImgTransHorizon = 100,$iImgTransSkewDist=150,

	$iImgTransDirection = 1, $iImgTransMinSize = true,

	$iImgTransFillColor='white',$iImgTransHighQ=false,

	$iImgTransBorder=false,$iImgTransHorizonPos=0.5;

    public $legend;

    protected $iYAxisDeltaPos=50;

    protected $iIconDepth=DEPTH_BACK;

    protected $iAxisLblBgType = 0,

	$iXAxisLblBgFillColor = 'lightgray', $iXAxisLblBgColor = 'black',

	$iYAxisLblBgFillColor = 'lightgray', $iYAxisLblBgColor = 'black';

    protected $iTables=NULL;



//---------------

// CONSTRUCTOR



    // aWIdth 		Width in pixels of image

    // aHeight  	Height in pixels of image

    // aCachedName	Name for image file in cache directory 

    // aTimeOut		Timeout in minutes for image in cache

    // aInline		If true the image is streamed back in the call to Stroke()

    //			If false the image is just created in the cache

    function Graph($aWidth=300,$aHeight=200,$aCachedName="",$aTimeOut=0,$aInline=true) {

	GLOBAL $gJpgBrandTiming;

	// If timing is used create a new timing object

	if( $gJpgBrandTiming ) {

	    global $tim;

	    $tim = new JpgTimer();

	    $tim->Push();

	}



	if( !is_numeric($aWidth) || !is_numeric($aHeight) ) {

	    JpGraphError::RaiseL(25008);//('Image width/height argument in Graph::Graph() must be numeric');

	}		



	// Automatically generate the image file name based on the name of the script that

	// generates the graph

	if( $aCachedName=="auto" )

	    $aCachedName=GenImgName();

			

	// Should the image be streamed back to the browser or only to the cache?

	$this->inline=$aInline;

		

	$this->img	= new RotImage($aWidth,$aHeight);



	$this->cache 	= new ImgStreamCache($this->img);

	$this->cache->SetTimeOut($aTimeOut);



	$this->title = new Text();

	$this->title->ParagraphAlign('center');

	$this->title->SetFont(FF_FONT2,FS_BOLD);

	$this->title->SetMargin(3);

	$this->title->SetAlign('center');



	$this->subtitle = new Text();

	$this->subtitle->ParagraphAlign('center');

	$this->subtitle->SetMargin(2);

	$this->subtitle->SetAlign('center');



	$this->subsubtitle = new Text();

	$this->subsubtitle->ParagraphAlign('center');

	$this->subsubtitle->SetMargin(2);

	$this->subsubtitle->SetAlign('center');



	$this->legend = new Legend();

	$this->footer = new Footer();



	// Window doesn't like '?' in the file name so replace it with an '_'

	$aCachedName = str_replace("?","_",$aCachedName);



	// If the cached version exist just read it directly from the

	// cache, stream it back to browser and exit

	if( $aCachedName!="" && READ_CACHE && $aInline )

	    if( $this->cache->GetAndStream($aCachedName) ) {

		exit();

	    }

				

	$this->cache_name = $aCachedName;

	$this->SetTickDensity(); // Normal density



	$this->tabtitle = new GraphTabTitle();

    }

//---------------

// PUBLIC METHODS	

    

    // Enable final image perspective transformation

    function Set3DPerspective($aDir=1,$aHorizon=100,$aSkewDist=120,$aQuality=false,$aFillColor='#FFFFFF',$aBorder=false,$aMinSize=true,$aHorizonPos=0.5) {

	$this->iImgTrans = true;

	$this->iImgTransHorizon = $aHorizon;

	$this->iImgTransSkewDist= $aSkewDist;

	$this->iImgTransDirection = $aDir;

	$this->iImgTransMinSize = $aMinSize;

	$this->iImgTransFillColor=$aFillColor;

	$this->iImgTransHighQ=$aQuality;

	$this->iImgTransBorder=$aBorder;

	$this->iImgTransHorizonPos=$aHorizonPos;

    }



    // Set Image format and optional quality

    function SetImgFormat($aFormat,$aQuality=75) {

	$this->img->SetImgFormat($aFormat,$aQuality);

    }



    // Should the grid be in front or back of the plot?

    function SetGridDepth($aDepth) {

	$this->grid_depth=$aDepth;

    }



    function SetIconDepth($aDepth) {

	$this->iIconDepth=$aDepth;

    }

	

    // Specify graph angle 0-360 degrees.

    function SetAngle($aAngle) {

	$this->img->SetAngle($aAngle);

    }



    function SetAlphaBlending($aFlg=true) {

	$this->img->SetAlphaBlending($aFlg);

    }



    // Shortcut to image margin

    function SetMargin($lm,$rm,$tm,$bm) {

	$this->img->SetMargin($lm,$rm,$tm,$bm);

    }



    function SetY2OrderBack($aBack=true) {

	$this->y2orderback = $aBack;

    }



    // Rotate the graph 90 degrees and set the margin 

    // when we have done a 90 degree rotation

    function Set90AndMargin($lm=0,$rm=0,$tm=0,$bm=0) {

	$lm = $lm ==0 ? floor(0.2 * $this->img->width)  : $lm ;

	$rm = $rm ==0 ? floor(0.1 * $this->img->width)  : $rm ;

	$tm = $tm ==0 ? floor(0.2 * $this->img->height) : $tm ;

	$bm = $bm ==0 ? floor(0.1 * $this->img->height) : $bm ;



	$adj = ($this->img->height - $this->img->width)/2;

	$this->img->SetMargin($tm-$adj,$bm-$adj,$rm+$adj,$lm+$adj);

	$this->img->SetCenter(floor($this->img->width/2),floor($this->img->height/2));

	$this->SetAngle(90);

	if( empty($this->yaxis) || empty($this->xaxis) ) {

	    JpgraphError::RaiseL(25009);//('You must specify what scale to use with a call to Graph::SetScale()');

	}

	$this->xaxis->SetLabelAlign('right','center');

	$this->yaxis->SetLabelAlign('center','bottom');

    }

	

    function SetClipping($aFlg=true) {

	$this->iDoClipping = $aFlg ;

    }



    // Add a plot object to the graph

    function Add($aPlot) {

	if( $aPlot == null )

	    JpGraphError::RaiseL(25010);//("Graph::Add() You tried to add a null plot to the graph.");

	if( is_array($aPlot) && count($aPlot) > 0 )

	    $cl = $aPlot[0];

	else

	    $cl = $aPlot;



	if( $cl instanceof Text ) 

	    $this->AddText($aPlot);

	elseif( $cl instanceof PlotLine )

	    $this->AddLine($aPlot);

	elseif( class_exists('PlotBand',false) && ($cl instanceof PlotBand) )

	    $this->AddBand($aPlot);

	elseif( class_exists('IconPlot',false) && ($cl instanceof IconPlot) )

	    $this->AddIcon($aPlot);

	elseif( class_exists('GTextTable',false) && ($cl instanceof GTextTable) )

	    $this->AddTable($aPlot);

	else

	    $this->plots[] = $aPlot;

    }



    function AddTable($aTable) {

	if( is_array($aTable) ) {

	    for($i=0; $i < count($aTable); ++$i )

		$this->iTables[]=$aTable[$i];

	}

	else {

	    $this->iTables[] = $aTable ;

	}	

    }



    function AddIcon($aIcon) {

	if( is_array($aIcon) ) {

	    for($i=0; $i < count($aIcon); ++$i )

		$this->iIcons[]=$aIcon[$i];

	}

	else {

	    $this->iIcons[] = $aIcon ;

	}	

    }



    // Add plot to second Y-scale

    function AddY2($aPlot) {

	if( $aPlot == null )

	    JpGraphError::RaiseL(25011);//("Graph::AddY2() You tried to add a null plot to the graph.");	



	if( is_array($aPlot) && count($aPlot) > 0 )

	    $cl = $aPlot[0];

	else

	    $cl = $aPlot;



	if( $cl instanceof Text ) 

	    $this->AddText($aPlot,true);

	elseif( $cl instanceof PlotLine )

	    $this->AddLine($aPlot,true);

	elseif( class_exists('PlotBand',false) && ($cl instanceof PlotBand) )

	    $this->AddBand($aPlot,true);

	else

	    $this->y2plots[] = $aPlot;

    }

	

    // Add plot to the extra Y-axises

    function AddY($aN,$aPlot) {



	if( $aPlot == null )

	    JpGraphError::RaiseL(25012);//("Graph::AddYN() You tried to add a null plot to the graph.");	



	if( is_array($aPlot) && count($aPlot) > 0 )

	    $cl = $aPlot[0];

	else

	    $cl = $aPlot;



	if( ($cl instanceof Text) || ($cl instanceof PlotLine) || 

	    (class_exists('PlotBand',false) && ($cl instanceof PlotBand)) )

	    JpGraph::RaiseL(25013);//('You can only add standard plots to multiple Y-axis');

	else

	    $this->ynplots[$aN][] = $aPlot;

    }



    // Add text object to the graph

    function AddText($aTxt,$aToY2=false) {

	if( $aTxt == null )

	    JpGraphError::RaiseL(25014);//("Graph::AddText() You tried to add a null text to the graph.");		

	if( $aToY2 ) {

	    if( is_array($aTxt) ) {

		for($i=0; $i < count($aTxt); ++$i )

		    $this->y2texts[]=$aTxt[$i];

	    }

	    else

		$this->y2texts[] = $aTxt;

	}

	else {

	    if( is_array($aTxt) ) {

		for($i=0; $i < count($aTxt); ++$i )

		    $this->texts[]=$aTxt[$i];

	    }

	    else

		$this->texts[] = $aTxt;

	}

    }

	

    // Add a line object (class PlotLine) to the graph

    function AddLine($aLine,$aToY2=false) {

	if( $aLine == null )

	    JpGraphError::RaiseL(25015);//("Graph::AddLine() You tried to add a null line to the graph.");	



	if( $aToY2 ) {

 	    if( is_array($aLine) ) {

		for($i=0; $i < count($aLine); ++$i )

		    $this->y2lines[]=$aLine[$i];

	    }

	    else

		$this->y2lines[] = $aLine;

	}

	else {

 	    if( is_array($aLine) ) {

		for($i=0; $i<count($aLine); ++$i )

		    $this->lines[]=$aLine[$i];

	    }

	    else

		$this->lines[] = $aLine;

	}

    }



    // Add vertical or horizontal band

    function AddBand($aBand,$aToY2=false) {

	if( $aBand == null )

	    JpGraphError::RaiseL(25016);//(" Graph::AddBand() You tried to add a null band to the graph.");



	if( $aToY2 ) {

	    if( is_array($aBand) ) {

		for($i=0; $i < count($aBand); ++$i )

		    $this->y2bands[] = $aBand[$i];

	    }

	    else

		$this->y2bands[] = $aBand;

	}

	else {

	    if( is_array($aBand) ) {

		for($i=0; $i < count($aBand); ++$i )

		    $this->bands[] = $aBand[$i];

	    }

	    else

		$this->bands[] = $aBand;

	}

    }



    function SetBackgroundGradient($aFrom='navy',$aTo='silver',$aGradType=2,$aStyle=BGRAD_FRAME) {

	$this->bkg_gradtype=$aGradType;

	$this->bkg_gradstyle=$aStyle;

	$this->bkg_gradfrom = $aFrom;

	$this->bkg_gradto = $aTo;

    } 

	

    // Set a country flag in the background

    function SetBackgroundCFlag($aName,$aBgType=BGIMG_FILLPLOT,$aMix=100) {

	$this->background_cflag = $aName;

	$this->background_cflag_type = $aBgType;

	$this->background_cflag_mix = $aMix;

    }



    // Alias for the above method

    function SetBackgroundCountryFlag($aName,$aBgType=BGIMG_FILLPLOT,$aMix=100) {

	$this->background_cflag = $aName;

	$this->background_cflag_type = $aBgType;

	$this->background_cflag_mix = $aMix;

    }





    // Specify a background image

    function SetBackgroundImage($aFileName,$aBgType=BGIMG_FILLPLOT,$aImgFormat="auto") {



	if( !USE_TRUECOLOR ) {

	    JpGraphError::RaiseL(25017);//("You are using GD 2.x and are trying to use a background images on a non truecolor image. To use background images with GD 2.x you <b>must</b> enable truecolor by setting the USE_TRUECOLOR constant to TRUE. Due to a bug in GD 2.0.1 using any truetype fonts with truecolor images will result in very poor quality fonts.");

	}



	// Get extension to determine image type

	if( $aImgFormat == "auto" ) {

	    $e = explode('.',$aFileName);

	    if( !$e ) {

		JpGraphError::RaiseL(25018,$aFileName);//('Incorrect file name for Graph::SetBackgroundImage() : '.$aFileName.' Must have a valid image extension (jpg,gif,png) when using autodetection of image type');

	    }



	    $valid_formats = array('png', 'jpg', 'gif');

	    $aImgFormat = strtolower($e[count($e)-1]);

	    if ($aImgFormat == 'jpeg')  {

		$aImgFormat = 'jpg';

	    }

	    elseif (!in_array($aImgFormat, $valid_formats) )  {

		JpGraphError::RaiseL(25019,$aImgFormat);//('Unknown file extension ($aImgFormat) in Graph::SetBackgroundImage() for filename: '.$aFileName);

	    }    

	}



	$this->background_image = $aFileName;

	$this->background_image_type=$aBgType;

	$this->background_image_format=$aImgFormat;

    }



    function SetBackgroundImageMix($aMix) {

	$this->background_image_mix = $aMix ;

    }

	

    // Specify axis style (boxed or single)

    function SetAxisStyle($aStyle) {

        $this->iAxisStyle = $aStyle ;

    }

	

    // Set a frame around the plot area

    function SetBox($aDrawPlotFrame=true,$aPlotFrameColor=array(0,0,0),$aPlotFrameWeight=1) {

	$this->boxed = $aDrawPlotFrame;

	$this->box_weight = $aPlotFrameWeight;

	$this->box_color = $aPlotFrameColor;

    }

	

    // Specify color for the plotarea (not the margins)

    function SetColor($aColor) {

	$this->plotarea_color=$aColor;

    }

	

    // Specify color for the margins (all areas outside the plotarea)

    function SetMarginColor($aColor) {

	$this->margin_color=$aColor;

    }

	

    // Set a frame around the entire image

    function SetFrame($aDrawImgFrame=true,$aImgFrameColor=array(0,0,0),$aImgFrameWeight=1) {

	$this->doframe = $aDrawImgFrame;

	$this->frame_color = $aImgFrameColor;

	$this->frame_weight = $aImgFrameWeight;

    }



    function SetFrameBevel($aDepth=3,$aBorder=false,$aBorderColor='black',$aColor1='white@0.4',$aColor2='darkgray@0.4',$aFlg=true) {

	$this->framebevel = $aFlg ;

	$this->framebeveldepth = $aDepth ;

	$this->framebevelborder = $aBorder ;

	$this->framebevelbordercolor = $aBorderColor ;

	$this->framebevelcolor1 = $aColor1 ;

	$this->framebevelcolor2 = $aColor2 ;



	$this->doshadow = false ;

    }



    // Set the shadow around the whole image

    function SetShadow($aShowShadow=true,$aShadowWidth=5,$aShadowColor=array(102,102,102)) {

	$this->doshadow = $aShowShadow;

	$this->shadow_color = $aShadowColor;

	$this->shadow_width = $aShadowWidth;

	$this->footer->iBottomMargin += $aShadowWidth;

	$this->footer->iRightMargin += $aShadowWidth;

    }



    // Specify x,y scale. Note that if you manually specify the scale

    // you must also specify the tick distance with a call to Ticks::Set()

    function SetScale($aAxisType,$aYMin=1,$aYMax=1,$aXMin=1,$aXMax=1) {

	$this->axtype = $aAxisType;



	if( $aYMax < $aYMin || $aXMax < $aXMin )

	    JpGraphError::RaiseL(25020);//('Graph::SetScale(): Specified Max value must be larger than the specified Min value.');



	$yt=substr($aAxisType,-3,3);

	if( $yt=="lin" )

	    $this->yscale = new LinearScale($aYMin,$aYMax);

	elseif( $yt == "int" ) {

	    $this->yscale = new LinearScale($aYMin,$aYMax);

	    $this->yscale->SetIntScale();

	}

	elseif( $yt=="log" )

	    $this->yscale = new LogScale($aYMin,$aYMax);

	else

	    JpGraphError::RaiseL(25021,$aAxisType);//("Unknown scale specification for Y-scale. ($aAxisType)");

			

	$xt=substr($aAxisType,0,3);

	if( $xt == "lin" || $xt == "tex" ) {

	    $this->xscale = new LinearScale($aXMin,$aXMax,"x");

	    $this->xscale->textscale = ($xt == "tex");

	}

	elseif( $xt == "int" ) {

	    $this->xscale = new LinearScale($aXMin,$aXMax,"x");

	    $this->xscale->SetIntScale();

	}

	elseif( $xt == "dat" ) {

	    $this->xscale = new DateScale($aXMin,$aXMax,"x");

	}

	elseif( $xt == "log" )

	    $this->xscale = new LogScale($aXMin,$aXMax,"x");

	else

	    JpGraphError::RaiseL(25022,$aAxisType);//(" Unknown scale specification for X-scale. ($aAxisType)");



	$this->xaxis = new Axis($this->img,$this->xscale);

	$this->yaxis = new Axis($this->img,$this->yscale);

	$this->xgrid = new Grid($this->xaxis);

	$this->ygrid = new Grid($this->yaxis);	

	$this->ygrid->Show();			

    }

	

    // Specify secondary Y scale

    function SetY2Scale($aAxisType="lin",$aY2Min=1,$aY2Max=1) {

	if( $aAxisType=="lin" ) 

	    $this->y2scale = new LinearScale($aY2Min,$aY2Max);

	elseif( $aAxisType == "int" ) {

	    $this->y2scale = new LinearScale($aY2Min,$aY2Max);

	    $this->y2scale->SetIntScale();

	}

	elseif( $aAxisType=="log" ) {

	    $this->y2scale = new LogScale($aY2Min,$aY2Max);

	}

	else JpGraphError::RaiseL(25023,$aAxisType);//("JpGraph: Unsupported Y2 axis type: $aAxisType\nMust be one of (lin,log,int)");

			

	$this->y2axis = new Axis($this->img,$this->y2scale);

	$this->y2axis->scale->ticks->SetDirection(SIDE_LEFT); 

	$this->y2axis->SetLabelSide(SIDE_RIGHT); 

	$this->y2axis->SetPos('max');

	$this->y2axis->SetTitleSide(SIDE_RIGHT);

		

	// Deafult position is the max x-value

	$this->y2grid = new Grid($this->y2axis);							

    }



    // Set the delta position (in pixels) between the multiple Y-axis

    function SetYDeltaDist($aDist) {

	$this->iYAxisDeltaPos = $aDist;

    }



    // Specify secondary Y scale

    function SetYScale($aN,$aAxisType="lin",$aYMin=1,$aYMax=1) {



	if( $aAxisType=="lin" ) 

	    $this->ynscale[$aN] = new LinearScale($aYMin,$aYMax);

	elseif( $aAxisType == "int" ) {

	    $this->ynscale[$aN] = new LinearScale($aYMin,$aYMax);

	    $this->ynscale[$aN]->SetIntScale();

	}

	elseif( $aAxisType=="log" ) {

	    $this->ynscale[$aN] = new LogScale($aYMin,$aYMax);

	}

	else JpGraphError::RaiseL(25024,$aAxisType);//("JpGraph: Unsupported Y axis type: $aAxisType\nMust be one of (lin,log,int)");

			

	$this->ynaxis[$aN] = new Axis($this->img,$this->ynscale[$aN]);

	$this->ynaxis[$aN]->scale->ticks->SetDirection(SIDE_LEFT); 

	$this->ynaxis[$aN]->SetLabelSide(SIDE_RIGHT); 

    }



    // Specify density of ticks when autoscaling 'normal', 'dense', 'sparse', 'verysparse'

    // The dividing factor have been determined heuristically according to my aesthetic 

    // sense (or lack off) y.m.m.v !

    function SetTickDensity($aYDensity=TICKD_NORMAL,$aXDensity=TICKD_NORMAL) {

	$this->xtick_factor=30;

	$this->ytick_factor=25;		

	switch( $aYDensity ) {

	    case TICKD_DENSE:

		$this->ytick_factor=12;			

		break;

	    case TICKD_NORMAL:

		$this->ytick_factor=25;			

		break;

	    case TICKD_SPARSE:

		$this->ytick_factor=40;			

		break;

	    case TICKD_VERYSPARSE:

		$this->ytick_factor=100;			

		break;		

	    default:

		JpGraphError::RaiseL(25025,$densy);//("JpGraph: Unsupported Tick density: $densy");

	}

	switch( $aXDensity ) {

	    case TICKD_DENSE:

		$this->xtick_factor=15;							

		break;

	    case TICKD_NORMAL:

		$this->xtick_factor=30;			

		break;

	    case TICKD_SPARSE:

		$this->xtick_factor=45;					

		break;

	    case TICKD_VERYSPARSE:

		$this->xtick_factor=60;								

		break;		

	    default:

		JpGraphError::RaiseL(25025,$densx);//("JpGraph: Unsupported Tick density: $densx");

	}		

    }

	



    // Get a string of all image map areas	

    function GetCSIMareas() {

	if( !$this->iHasStroked )

	    $this->Stroke(_CSIM_SPECIALFILE);



	$csim = $this->title->GetCSIMAreas();

	$csim .= $this->subtitle->GetCSIMAreas();

	$csim .= $this->subsubtitle->GetCSIMAreas();

	$csim .= $this->legend->GetCSIMAreas();



	if( $this->y2axis != NULL ) {

	    $csim .= $this->y2axis->title->GetCSIMAreas();

	}



	if( $this->texts != null ) {

	    $n = count($this->texts);

	    for($i=0; $i < $n; ++$i ) {

		$csim .= $this->texts[$i]->GetCSIMAreas();

	    }

	}



	if( $this->y2texts != null && $this->y2scale != null ) {

	    $n = count($this->y2texts);

	    for($i=0; $i < $n; ++$i ) {

		$csim .= $this->y2texts[$i]->GetCSIMAreas();

	    }

	}



	if( $this->yaxis != null && $this->xaxis != null ) {

	    $csim .= $this->yaxis->title->GetCSIMAreas();	

	    $csim .= $this->xaxis->title->GetCSIMAreas();

	}



	$n = count($this->plots);

	for( $i=0; $i < $n; ++$i ) 

	    $csim .= $this->plots[$i]->GetCSIMareas();



	$n = count($this->y2plots);

	for( $i=0; $i < $n; ++$i ) 

	    $csim .= $this->y2plots[$i]->GetCSIMareas();



	$n = count($this->ynaxis);

	for( $i=0; $i < $n; ++$i ) {

	    $m = count($this->ynplots[$i]); 

	    for($j=0; $j < $m; ++$j ) {

		$csim .= $this->ynplots[$i][$j]->GetCSIMareas();

	    }

	}



	$n = count($this->iTables);

	for( $i=0; $i < $n; ++$i ) {

	    $csim .= $this->iTables[$i]->GetCSIMareas();

	}



	return $csim;

    }

	

    // Get a complete <MAP>..</MAP> tag for the final image map

    function GetHTMLImageMap($aMapName) {

	$im = "<map name=\"$aMapName\" id=\"$aMapName\" >\n";

	$im .= $this->GetCSIMareas();

	$im .= "</map>"; 

	return $im;

    }



    function CheckCSIMCache($aCacheName,$aTimeOut=60) {

	global $_SERVER;



	if( $aCacheName=='auto' )

	    $aCacheName=basename($_SERVER['PHP_SELF']);



	$urlarg = $this->GetURLArguments();

	$this->csimcachename = CSIMCACHE_DIR.$aCacheName.$urlarg;

	$this->csimcachetimeout = $aTimeOut;



	// First determine if we need to check for a cached version

	// This differs from the standard cache in the sense that the

	// image and CSIM map HTML file is written relative to the directory

	// the script executes in and not the specified cache directory.

	// The reason for this is that the cache directory is not necessarily

	// accessible from the HTTP server.

	if( $this->csimcachename != '' ) {

	    $dir = dirname($this->csimcachename);

	    $base = basename($this->csimcachename);

	    $base = strtok($base,'.');

	    $suffix = strtok('.');

	    $basecsim = $dir.'/'.$base.'?'.$urlarg.'_csim_.html';

	    $baseimg = $dir.'/'.$base.'?'.$urlarg.'.'.$this->img->img_format;



	    $timedout=false;

	    // Does it exist at all ?

	    

	    if( file_exists($basecsim) && file_exists($baseimg) ) {

		// Check that it hasn't timed out

		$diff=time()-filemtime($basecsim);

		if( $this->csimcachetimeout>0 && ($diff > $this->csimcachetimeout*60) ) {

		    $timedout=true;

		    @unlink($basecsim);

		    @unlink($baseimg);

		}

		else {

		    if ($fh = @fopen($basecsim, "r")) {

			fpassthru($fh);

			return true;

		    }

		    else

			JpGraphError::RaiseL(25027,$basecsim);//(" Can't open cached CSIM \"$basecsim\" for reading.");

		}

	    }

	}

	return false;

    }



    // Build the argument string to be used with the csim images

    function GetURLArguments() {

		

	// This is a JPGRAPH internal defined that prevents

	// us from recursively coming here again

	$urlarg = _CSIM_DISPLAY.'=1';



	// Now reconstruct any user URL argument

	reset($_REQUEST);

	while( list($key,$value) = each($_REQUEST) ) {

	    if( is_array($value) ) {

		foreach ( $value as $k => $v ) {

		    $urlarg .= '&amp;'.$key.'%5B'.$k.'%5D='.urlencode($v);

		}

	    }

	    else {

		$urlarg .= '&amp;'.$key.'='.urlencode($value);

	    }

	}



	// It's not ideal to convert POST argument to GET arguments

	// but there is little else we can do. One idea for the 

	// future might be recreate the POST header in case.

	reset($_REQUEST);

	while( list($key,$value) = each($_REQUEST) ) {

	    if( is_array($value) ) {

		foreach ( $value as $k => $v ) {

		    $urlarg .= '&amp;'.$key.'%5B'.$k.'%5D='.urlencode($v);

		}

	    }

	    else {

		$urlarg .= '&amp;'.$key.'='.urlencode($value);

	    }

	}



	return $urlarg;

    }



    function SetCSIMImgAlt($aAlt) {

	$this->iCSIMImgAlt = $aAlt;

    }



    function StrokeCSIM($aScriptName='auto',$aCSIMName='',$aBorder=0) {

	if( $aCSIMName=='' ) {

	    // create a random map name

	    srand ((double) microtime() * 1000000);

	    $r = rand(0,100000);

	    $aCSIMName='__mapname'.$r.'__';

	}



	if( $aScriptName=='auto' )

	    $aScriptName=basename($_SERVER['PHP_SELF']);



	$urlarg = $this->GetURLArguments();



	if( empty($_REQUEST[_CSIM_DISPLAY]) ) {

	    // First determine if we need to check for a cached version

	    // This differs from the standard cache in the sense that the

	    // image and CSIM map HTML file is written relative to the directory

	    // the script executes in and not the specified cache directory.

	    // The reason for this is that the cache directory is not necessarily

	    // accessible from the HTTP server.

	    if( $this->csimcachename != '' ) {

		$dir = dirname($this->csimcachename);

		$base = basename($this->csimcachename);

		$base = strtok($base,'.');

		$suffix = strtok('.');

		$basecsim = $dir.'/'.$base.'?'.$urlarg.'_csim_.html';

		$baseimg = $base.'?'.$urlarg.'.'.$this->img->img_format;



		// Check that apache can write to directory specified



		if( file_exists($dir) && !is_writeable($dir) ) {

		    JpgraphError::RaiseL(25028,$dir);//('Apache/PHP does not have permission to write to the CSIM cache directory ('.$dir.'). Check permissions.');

		}

		

		// Make sure directory exists

		$this->cache->MakeDirs($dir);



		// Write the image file

		$this->Stroke(CSIMCACHE_DIR.$baseimg);



		// Construct wrapper HTML and write to file and send it back to browser



		// In the src URL we must replace the '?' with its encoding to prevent the arguments

		// to be converted to real arguments.

		$tmp = str_replace('?','%3f',$baseimg);

		$htmlwrap = $this->GetHTMLImageMap($aCSIMName)."\n".

		    '<img src="'.CSIMCACHE_HTTP_DIR.$tmp.'" ismap="ismap" usemap="#'.$aCSIMName.'" border="'.$aBorder.'" width="'.$this->img->width.'" height="'.$this->img->height."\" alt=\"".$this->iCSIMImgAlt."\" />\n";



		if($fh =  @fopen($basecsim,'w') ) {

		    fwrite($fh,$htmlwrap);

		    fclose($fh);

		    echo $htmlwrap;

		}

		else

		    JpGraphError::RaiseL(25029,$basecsim);//(" Can't write CSIM \"$basecsim\" for writing. Check free space and permissions.");

	    }

	    else {



		if( $aScriptName=='' ) {

		    JpGraphError::RaiseL(25030);//('Missing script name in call to StrokeCSIM(). You must specify the name of the actual image script as the first parameter to StrokeCSIM().');

		}

		echo $this->GetHTMLImageMap($aCSIMName);

		echo "<img src=\"".$aScriptName.'?'.$urlarg."\" ismap=\"ismap\" usemap=\"#".$aCSIMName.'" border="'.$aBorder.'" width="'.$this->img->width.'" height="'.$this->img->height."\" alt=\"".$this->iCSIMImgAlt."\" />\n";

	    }

	}

	else {

	    $this->Stroke();

	}

    }



    function GetTextsYMinMax($aY2=false) {

	if( $aY2 ) 

	    $txts = $this->y2texts;

	else

	    $txts = $this->texts;

	$n = count($txts);

	$min=null;

	$max=null;

	for( $i=0; $i < $n; ++$i ) {

	    if( $txts[$i]->iScalePosY !== null && 

		$txts[$i]->iScalePosX !== null  ) {

		if( $min === null  ) {

		    $min = $max = $txts[$i]->iScalePosY ;

		}

		else {

		    $min = min($min,$txts[$i]->iScalePosY);

		    $max = max($max,$txts[$i]->iScalePosY);

		}

	    }

	}

	if( $min !== null ) {

	    return array($min,$max);

	}

	else

	    return null;

    }



    function GetTextsXMinMax($aY2=false) {

	if( $aY2 ) 

	    $txts = $this->y2texts;

	else

	    $txts = $this->texts;

	$n = count($txts);

	$min=null;

	$max=null;

	for( $i=0; $i < $n; ++$i ) {

	    if( $txts[$i]->iScalePosY !== null && 

		$txts[$i]->iScalePosX !== null  ) {

		if( $min === null  ) {

		    $min = $max = $txts[$i]->iScalePosX ;

		}

		else {

		    $min = min($min,$txts[$i]->iScalePosX);

		    $max = max($max,$txts[$i]->iScalePosX);

		}

	    }

	}

	if( $min !== null ) {

	    return array($min,$max);

	}

	else

	    return null;

    }



    function GetXMinMax() {

	list($min,$ymin) = $this->plots[0]->Min();

	list($max,$ymax) = $this->plots[0]->Max();

	foreach( $this->plots as $p ) {

	    list($xmin,$ymin) = $p->Min();

	    list($xmax,$ymax) = $p->Max();			

	    $min = Min($xmin,$min);

	    $max = Max($xmax,$max);

	}



	if( $this->y2axis != null ) {

	    foreach( $this->y2plots as $p ) {

		list($xmin,$ymin) = $p->Min();

			list($xmax,$ymax) = $p->Max();			

			$min = Min($xmin,$min);

			$max = Max($xmax,$max);

	    }		    

	}



	$n = count($this->ynaxis);

	for( $i=0; $i < $n; ++$i ) {

	    if( $this->ynaxis[$i] != null) {

		foreach( $this->ynplots[$i] as $p ) {

		    list($xmin,$ymin) = $p->Min();

		    list($xmax,$ymax) = $p->Max();			

		    $min = Min($xmin,$min);

		    $max = Max($xmax,$max);

		}		    

	    }

	}

	return array($min,$max);

    }



    function AdjustMarginsForTitles() {

	$totrequired = 

	    ($this->title->t != '' ? 

	     $this->title->GetTextHeight($this->img) + $this->title->margin + 5 : 0 ) +

	    ($this->subtitle->t != '' ? 

	     $this->subtitle->GetTextHeight($this->img) + $this->subtitle->margin + 5 : 0 ) + 

	    ($this->subsubtitle->t != '' ? 

	     $this->subsubtitle->GetTextHeight($this->img) + $this->subsubtitle->margin + 5 : 0 ) ;

	



	$btotrequired = 0;

	if($this->xaxis != null &&  !$this->xaxis->hide && !$this->xaxis->hide_labels ) {

	    // Minimum bottom margin

	    if( $this->xaxis->title->t != '' ) {

		if( $this->img->a == 90 ) 

		    $btotrequired = $this->yaxis->title->GetTextHeight($this->img) + 5 ;

		else

		    $btotrequired = $this->xaxis->title->GetTextHeight($this->img) + 5 ;

	    }

	    else

		$btotrequired = 0;

	    

	    if( $this->img->a == 90 ) {

		$this->img->SetFont($this->yaxis->font_family,$this->yaxis->font_style,

				    $this->yaxis->font_size);

		$lh = $this->img->GetTextHeight('Mg',$this->yaxis->label_angle);

	    }

	    else {

		$this->img->SetFont($this->xaxis->font_family,$this->xaxis->font_style,

				    $this->xaxis->font_size);

		$lh = $this->img->GetTextHeight('Mg',$this->xaxis->label_angle);

	    }

	    

	    $btotrequired += $lh + 5;

	}



	if( $this->img->a == 90 ) {

	    // DO Nothing. It gets too messy to do this properly for 90 deg...

	}

	else{

	    if( $this->img->top_margin < $totrequired ) {

		$this->SetMargin($this->img->left_margin,$this->img->right_margin,

				 $totrequired,$this->img->bottom_margin);

	    }

	    if( $this->img->bottom_margin < $btotrequired ) {

		$this->SetMargin($this->img->left_margin,$this->img->right_margin,

				 $this->img->top_margin,$btotrequired);

	    }

	}

    }



    // Stroke the graph

    // $aStrokeFileName	If != "" the image will be written to this file and NOT

    // streamed back to the browser

    function Stroke($aStrokeFileName="") {		



	// Fist make a sanity check that user has specified a scale

	if( empty($this->yscale) ) {

	    JpGraphError::RaiseL(25031);//('You must specify what scale to use with a call to Graph::SetScale().');

	}



	// Start by adjusting the margin so that potential titles will fit.

	$this->AdjustMarginsForTitles();



	// Setup scale constants

	if( $this->yscale ) $this->yscale->InitConstants($this->img);

	if( $this->xscale ) $this->xscale->InitConstants($this->img);

	if( $this->y2scale ) $this->y2scale->InitConstants($this->img);

	

	$n=count($this->ynscale);

	for($i=0; $i < $n; ++$i) {

	  if( $this->ynscale[$i] ) $this->ynscale[$i]->InitConstants($this->img);

	}



	// If the filename is the predefined value = '_csim_special_'

	// we assume that the call to stroke only needs to do enough

	// to correctly generate the CSIM maps.

	// We use this variable to skip things we don't strictly need

	// to do to generate the image map to improve performance

	// a best we can. Therefor you will see a lot of tests !$_csim in the

	// code below.

	$_csim = ($aStrokeFileName===_CSIM_SPECIALFILE);



	// We need to know if we have stroked the plot in the

	// GetCSIMareas. Otherwise the CSIM hasn't been generated

	// and in the case of GetCSIM called before stroke to generate

	// CSIM without storing an image to disk GetCSIM must call Stroke.

	$this->iHasStroked = true;



	// Do any pre-stroke adjustment that is needed by the different plot types

	// (i.e bar plots want's to add an offset to the x-labels etc)

	for($i=0; $i < count($this->plots) ; ++$i ) {

	    $this->plots[$i]->PreStrokeAdjust($this);

	    $this->plots[$i]->DoLegend($this);

	}

		

	// Any plots on the second Y scale?

	if( $this->y2scale != null ) {

	    for($i=0; $i<count($this->y2plots)	; ++$i ) {

		$this->y2plots[$i]->PreStrokeAdjust($this);

		$this->y2plots[$i]->DoLegend($this);

	    }

	}



	// Any plots on the extra Y axises?

	$n = count($this->ynaxis);

	for($i=0; $i<$n	; ++$i ) {

	    if( $this->ynplots == null || $this->ynplots[$i] == null) {

		JpGraphError::RaiseL(25032,$i);//("No plots for Y-axis nbr:$i");

	    } 

	    $m = count($this->ynplots[$i]); 

	    for($j=0; $j < $m; ++$j ) {

		$this->ynplots[$i][$j]->PreStrokeAdjust($this);

		$this->ynplots[$i][$j]->DoLegend($this);

	    }

	}



	// Bail out if any of the Y-axis not been specified and

	// has no plots. (This means it is impossible to do autoscaling and

	// no other scale was given so we can't possible draw anything). If you use manual

	// scaling you also have to supply the tick steps as well.

	if( (!$this->yscale->IsSpecified() && count($this->plots)==0) ||

	    ($this->y2scale!=null && !$this->y2scale->IsSpecified() && count($this->y2plots)==0) ) {

	    //$e = "n=".count($this->y2plots)."\n";

	    // $e = "Can't draw unspecified Y-scale.<br>\nYou have either:<br>\n";

	    // $e .= "1. Specified an Y axis for autoscaling but have not supplied any plots<br>\n";

	    // $e .= "2. Specified a scale manually but have forgot to specify the tick steps";

	    JpGraphError::RaiseL(25026);

	}

		

	// Bail out if no plots and no specified X-scale

	if( (!$this->xscale->IsSpecified() && count($this->plots)==0 && count($this->y2plots)==0) )

	    JpGraphError::RaiseL(25034);//("<strong>JpGraph: Can't draw unspecified X-scale.</strong><br>No plots.<br>");



	//Check if we should autoscale y-axis

	if( !$this->yscale->IsSpecified() && count($this->plots)>0 ) {

	    list($min,$max) = $this->GetPlotsYMinMax($this->plots);

 	    $lres = $this->GetLinesYMinMax($this->lines);

	    if( is_array($lres) ) {

		list($linmin,$linmax) = $lres ;

		$min = min($min,$linmin);

		$max = max($max,$linmax);

	    }

	    $tres = $this->GetTextsYMinMax();

	    if( is_array($tres) ) {

		list($tmin,$tmax) = $tres ;

		$min = min($min,$tmin);

		$max = max($max,$tmax);

	    }

	    $this->yscale->AutoScale($this->img,$min,$max,

				     $this->img->plotheight/$this->ytick_factor);

	}

	elseif( $this->yscale->IsSpecified() && 

		( $this->yscale->auto_ticks || !$this->yscale->ticks->IsSpecified()) ) {

	    // The tick calculation will use the user suplied min/max values to determine

	    // the ticks. If auto_ticks is false the exact user specifed min and max

	    // values will be used for the scale. 

	    // If auto_ticks is true then the scale might be slightly adjusted

	    // so that the min and max values falls on an even major step.

	    $min = $this->yscale->scale[0];

	    $max = $this->yscale->scale[1];

	    $this->yscale->AutoScale($this->img,$min,$max,

				     $this->img->plotheight/$this->ytick_factor,

				     $this->yscale->auto_ticks);



	    // Now make sure we show enough precision to accurate display the

	    // labels. If this is not done then the user might end up with

	    // a scale that might actually start with, say 13.5, butdue to rounding

	    // the scale label will ony show 14.

	    if( abs(floor($min)-$min) > 0 ) {

		

		// If the user has set a format then we bail out

		if( $this->yscale->ticks->label_formatstr == '' && $this->yscale->ticks->label_dateformatstr == '' ) {

		    $this->yscale->ticks->precision = abs( floor(log10( abs(floor($min)-$min))) )+1;

		}

	    }

	}



	if( $this->y2scale != null) {

	    if( !$this->y2scale->IsSpecified() && count($this->y2plots)>0 ) {

		list($min,$max) = $this->GetPlotsYMinMax($this->y2plots);



		$lres = $this->GetLinesYMinMax($this->y2lines);

		if( is_array($lres) ) {

		    list($linmin,$linmax) = $lres ;

		    $min = min($min,$linmin);

		    $max = max($max,$linmax);

		}

		$tres = $this->GetTextsYMinMax(true);

		if( is_array($tres) ) {

		    list($tmin,$tmax) = $tres ;

		    $min = min($min,$tmin);

		    $max = max($max,$tmax);

		}

		$this->y2scale->AutoScale($this->img,$min,$max,$this->img->plotheight/$this->ytick_factor);

	    }			

	    elseif( $this->y2scale->IsSpecified() && 

		    ( $this->y2scale->auto_ticks || !$this->y2scale->ticks->IsSpecified()) ) {

		// The tick calculation will use the user suplied min/max values to determine

		// the ticks. If auto_ticks is false the exact user specifed min and max

		// values will be used for the scale. 

		// If auto_ticks is true then the scale might be slightly adjusted

		// so that the min and max values falls on an even major step.

		$min = $this->y2scale->scale[0];

		$max = $this->y2scale->scale[1];

		$this->y2scale->AutoScale($this->img,$min,$max,

					  $this->img->plotheight/$this->ytick_factor,

					  $this->y2scale->auto_ticks);



	    // Now make sure we show enough precision to accurate display the

	    // labels. If this is not done then the user might end up with

	    // a scale that might actually start with, say 13.5, butdue to rounding

	    // the scale label will ony show 14.

	    if( abs(floor($min)-$min) > 0 ) {

		

		// If the user has set a format then we bail out

		if( $this->y2scale->ticks->label_formatstr == '' && $this->y2scale->ticks->label_dateformatstr == '' ) {

		    $this->y2scale->ticks->precision = abs( floor(log10( abs(floor($min)-$min))) )+1;

		}

	    }



	    }

	}

				

	//

	// Autoscale the extra Y-axises

	//

	$n = count($this->ynaxis);

	for( $i=0; $i < $n; ++$i ) {

	  if( $this->ynscale[$i] != null) {

	    if( !$this->ynscale[$i]->IsSpecified() && count($this->ynplots[$i])>0 ) {

	      list($min,$max) = $this->GetPlotsYMinMax($this->ynplots[$i]);

	      $this->ynscale[$i]->AutoScale($this->img,$min,$max,$this->img->plotheight/$this->ytick_factor);

	    }			

	    elseif( $this->ynscale[$i]->IsSpecified() && 

		    ( $this->ynscale[$i]->auto_ticks || !$this->ynscale[$i]->ticks->IsSpecified()) ) {

		// The tick calculation will use the user suplied min/max values to determine

		// the ticks. If auto_ticks is false the exact user specifed min and max

		// values will be used for the scale. 

		// If auto_ticks is true then the scale might be slightly adjusted

		// so that the min and max values falls on an even major step.

	      $min = $this->ynscale[$i]->scale[0];

	      $max = $this->ynscale[$i]->scale[1];

	      $this->ynscale[$i]->AutoScale($this->img,$min,$max,

					    $this->img->plotheight/$this->ytick_factor,

					    $this->ynscale[$i]->auto_ticks);



	      // Now make sure we show enough precision to accurate display the

	      // labels. If this is not done then the user might end up with

	      // a scale that might actually start with, say 13.5, butdue to rounding

	      // the scale label will ony show 14.

	      if( abs(floor($min)-$min) > 0 ) {

		

		  // If the user has set a format then we bail out

		  if( $this->ynscale[$i]->ticks->label_formatstr == '' && $this->ynscale[$i]->ticks->label_dateformatstr == '' ) {

		      $this->ynscale[$i]->ticks->precision = abs( floor(log10( abs(floor($min)-$min))) )+1;

		  }

	      }



	    }

	  }

	}

		

	//Check if we should autoscale x-axis

	if( !$this->xscale->IsSpecified() ) {

	    if( substr($this->axtype,0,4) == "text" ) {

		$max=0;

		$n = count($this->plots);

		for($i=0; $i < $n; ++$i ) {

		    $p = $this->plots[$i];

		    // We need some unfortunate sub class knowledge here in order

		    // to increase number of data points in case it is a line plot

		    // which has the barcenter set. If not it could mean that the

		    // last point of the data is outside the scale since the barcenter

		    // settings means that we will shift the entire plot half a tick step

		    // to the right in oder to align with the center of the bars.

		    if( class_exists('BarPlot',false) ) {

			$cl = strtolower(get_class($p));

			if( (class_exists('BarPlot',false) && ($p instanceof BarPlot)) || 

			    empty($p->barcenter) ) 

			    $max=max($max,$p->numpoints-1);

			else {

			    $max=max($max,$p->numpoints);

			}

		    }

		    else {

			if( empty($p->barcenter) ) {

			    $max=max($max,$p->numpoints-1);

			}

			else {

			    $max=max($max,$p->numpoints);

			}

		    }

		}

		$min=0;

		if( $this->y2axis != null ) {

		    foreach( $this->y2plots as $p ) {

			$max=max($max,$p->numpoints-1);

		    }		    

		}

		$n = count($this->ynaxis);

		for( $i=0; $i < $n; ++$i ) {

		    if( $this->ynaxis[$i] != null) {

			foreach( $this->ynplots[$i] as $p ) {

			    $max=max($max,$p->numpoints-1);

			}		    

		    }

		}

		

		$this->xscale->Update($this->img,$min,$max);

		$this->xscale->ticks->Set($this->xaxis->tick_step,1);

		$this->xscale->ticks->SupressMinorTickMarks();

	    }

	    else {

		list($min,$max) = $this->GetXMinMax();



		$lres = $this->GetLinesXMinMax($this->lines);

		if( $lres ) {

		    list($linmin,$linmax) = $lres ;

		    $min = min($min,$linmin);

		    $max = max($max,$linmax);

		}



		$lres = $this->GetLinesXMinMax($this->y2lines);

		if( $lres ) {

		    list($linmin,$linmax) = $lres ;

		    $min = min($min,$linmin);

		    $max = max($max,$linmax);

		}



		$tres = $this->GetTextsXMinMax();

		if( $tres ) {

		    list($tmin,$tmax) = $tres ;

		    $min = min($min,$tmin);

		    $max = max($max,$tmax);

		}



		$tres = $this->GetTextsXMinMax(true);

		if( $tres ) {

		    list($tmin,$tmax) = $tres ;

		    $min = min($min,$tmin);

		    $max = max($max,$tmax);

		}



		$this->xscale->AutoScale($this->img,$min,$max,round($this->img->plotwidth/$this->xtick_factor));

	    }

			

	    //Adjust position of y-axis and y2-axis to minimum/maximum of x-scale

	    if( !is_numeric($this->yaxis->pos) && !is_string($this->yaxis->pos) )

	    	$this->yaxis->SetPos($this->xscale->GetMinVal());

	    if( $this->y2axis != null ) {

		if( !is_numeric($this->y2axis->pos) && !is_string($this->y2axis->pos) )

		    $this->y2axis->SetPos($this->xscale->GetMaxVal());

		$this->y2axis->SetTitleSide(SIDE_RIGHT);

	    }

	    $n = count($this->ynaxis);

	    $nY2adj = $this->y2axis != null ? $this->iYAxisDeltaPos : 0;

	    for( $i=0; $i < $n; ++$i ) { 

		if( $this->ynaxis[$i] != null ) {

		    if( !is_numeric($this->ynaxis[$i]->pos) && !is_string($this->ynaxis[$i]->pos) ) {

			$this->ynaxis[$i]->SetPos($this->xscale->GetMaxVal());

		  $this->ynaxis[$i]->SetPosAbsDelta($i*$this->iYAxisDeltaPos + $nY2adj);

		    }

		    $this->ynaxis[$i]->SetTitleSide(SIDE_RIGHT);

		}

	    }



	}	

	elseif( $this->xscale->IsSpecified() &&  

		( $this->xscale->auto_ticks || !$this->xscale->ticks->IsSpecified()) ) {

	    // The tick calculation will use the user suplied min/max values to determine

	    // the ticks. If auto_ticks is false the exact user specifed min and max

	    // values will be used for the scale. 

	    // If auto_ticks is true then the scale might be slightly adjusted

	    // so that the min and max values falls on an even major step.

	    $min = $this->xscale->scale[0];

	    $max = $this->xscale->scale[1];

	    $this->xscale->AutoScale($this->img,$min,$max,

				     round($this->img->plotwidth/$this->xtick_factor),

				     false);



	    // Now make sure we show enough precision to accurate display the

	    // labels. If this is not done then the user might end up with

	    // a scale that might actually start with, say 13.5, butdue to rounding

	    // the scale label will ony show 14.

	    if( abs(floor($min)-$min) > 0 ) {

		

		// If the user has set a format then we bail out

		if( $this->xscale->ticks->label_formatstr == '' && $this->xscale->ticks->label_dateformatstr == '' ) {

		    $this->xscale->ticks->precision = abs( floor(log10( abs(floor($min)-$min))) )+1;

		}

	    }





	    if( $this->y2axis != null ) {

		if( !is_numeric($this->y2axis->pos) && !is_string($this->y2axis->pos) )

		    $this->y2axis->SetPos($this->xscale->GetMaxVal());

		$this->y2axis->SetTitleSide(SIDE_RIGHT);

	    }



	}

		

	// If we have a negative values and x-axis position is at 0

	// we need to supress the first and possible the last tick since

	// they will be drawn on top of the y-axis (and possible y2 axis)

	// The test below might seem strange the reasone being that if

	// the user hasn't specified a value for position this will not

	// be set until we do the stroke for the axis so as of now it

	// is undefined.

	// For X-text scale we ignore all this since the tick are usually

	// much further in and not close to the Y-axis. Hence the test 

	// for 'text'	



	if( ($this->yaxis->pos==$this->xscale->GetMinVal() || 

	     (is_string($this->yaxis->pos) && $this->yaxis->pos=='min')) &&  

	    !is_numeric($this->xaxis->pos) && $this->yscale->GetMinVal() < 0 && 

	    substr($this->axtype,0,4) != 'text' && $this->xaxis->pos!="min" ) {



	    //$this->yscale->ticks->SupressZeroLabel(false);

	    $this->xscale->ticks->SupressFirst();

	    if( $this->y2axis != null ) {

		$this->xscale->ticks->SupressLast();

	    }

	}

	elseif( !is_numeric($this->yaxis->pos) && $this->yaxis->pos=='max' ) {

	    $this->xscale->ticks->SupressLast();

	}

	



	if( !$_csim ) {

	    $this->StrokePlotArea();

	    if( $this->iIconDepth == DEPTH_BACK ) {

		$this->StrokeIcons();

	    }

	}

	$this->StrokeAxis(false);



	// Stroke bands

	if( $this->bands != null && !$_csim) 

	    for($i=0; $i < count($this->bands); ++$i) {

		// Stroke all bands that asks to be in the background

		if( $this->bands[$i]->depth == DEPTH_BACK )

		    $this->bands[$i]->Stroke($this->img,$this->xscale,$this->yscale);

	    }



	if( $this->y2bands != null && $this->y2scale != null && !$_csim )

	    for($i=0; $i < count($this->y2bands); ++$i) {

		// Stroke all bands that asks to be in the foreground

		if( $this->y2bands[$i]->depth == DEPTH_BACK )

		    $this->y2bands[$i]->Stroke($this->img,$this->xscale,$this->y2scale);

	    }





	if( $this->grid_depth == DEPTH_BACK && !$_csim) {

	    $this->ygrid->Stroke();

	    $this->xgrid->Stroke();

	}

				

	// Stroke Y2-axis

	if( $this->y2axis != null && !$_csim) {		

	    $this->y2axis->Stroke($this->xscale); 				

	    $this->y2grid->Stroke();

	}



	// Stroke yn-axis

	$n = count($this->ynaxis); 

	for( $i=0; $i < $n; ++$i ) {

	    $this->ynaxis[$i]->Stroke($this->xscale); 				

	}



	$oldoff=$this->xscale->off;

	if(substr($this->axtype,0,4)=="text") {

	    if( $this->text_scale_abscenteroff > -1 ) {

		// For a text scale the scale factor is the number of pixel per step. 

		// Hence we can use the scale factor as a substitute for number of pixels

		// per major scale step and use that in order to adjust the offset so that

		// an object of width "abscenteroff" becomes centered.

		$this->xscale->off += round($this->xscale->scale_factor/2)-round($this->text_scale_abscenteroff/2);

	    }

	    else {

		$this->xscale->off += 

		    ceil($this->xscale->scale_factor*$this->text_scale_off*$this->xscale->ticks->minor_step);

	    }

	}



	if( $this->iDoClipping ) {

	    $oldimage = $this->img->CloneCanvasH();

	}



	if( ! $this->y2orderback ) {

	    // Stroke all plots for Y1 axis

	    for($i=0; $i < count($this->plots); ++$i) {

		$this->plots[$i]->Stroke($this->img,$this->xscale,$this->yscale);

		$this->plots[$i]->StrokeMargin($this->img);

	    }						

	}



	// Stroke all plots for Y2 axis

	if( $this->y2scale != null )

	    for($i=0; $i< count($this->y2plots); ++$i ) {	

		$this->y2plots[$i]->Stroke($this->img,$this->xscale,$this->y2scale);

	    }		



	if( $this->y2orderback ) {

	    // Stroke all plots for Y1 axis

	    for($i=0; $i < count($this->plots); ++$i) {

		$this->plots[$i]->Stroke($this->img,$this->xscale,$this->yscale);

		$this->plots[$i]->StrokeMargin($this->img);

	    }						

	}



	$n = count($this->ynaxis); 

	for( $i=0; $i < $n; ++$i ) {

	    $m = count($this->ynplots[$i]);

	    for( $j=0; $j < $m; ++$j ) { 

		$this->ynplots[$i][$j]->Stroke($this->img,$this->xscale,$this->ynscale[$i]);

		$this->ynplots[$i][$j]->StrokeMargin($this->img);

	    }

	}



	if( $this->iIconDepth == DEPTH_FRONT) {

	    $this->StrokeIcons();

	}

	

	if( $this->iDoClipping ) {

	    // Clipping only supports graphs at 0 and 90 degrees

	    if( $this->img->a == 0 ) {

		$this->img->CopyCanvasH($oldimage,$this->img->img,

					$this->img->left_margin,$this->img->top_margin,

					$this->img->left_margin,$this->img->top_margin,

					$this->img->plotwidth+1,$this->img->plotheight);

	    }

	    elseif( $this->img->a == 90 ) {

		$adj = ($this->img->height - $this->img->width)/2;

		$this->img->CopyCanvasH($oldimage,$this->img->img,

					$this->img->bottom_margin-$adj,$this->img->left_margin+$adj,

					$this->img->bottom_margin-$adj,$this->img->left_margin+$adj,

					$this->img->plotheight+1,$this->img->plotwidth);

	    }

	    else {

		JpGraphError::RaiseL(25035,$this->img->a);//('You have enabled clipping. Cliping is only supported for graphs at 0 or 90 degrees rotation. Please adjust you current angle (='.$this->img->a.' degrees) or disable clipping.');

	    }

	    $this->img->Destroy();

	    $this->img->SetCanvasH($oldimage);

	}



	$this->xscale->off=$oldoff;

		

	if( $this->grid_depth == DEPTH_FRONT && !$_csim ) {

	    $this->ygrid->Stroke();

	    $this->xgrid->Stroke();

	}



	// Stroke bands

	if( $this->bands!= null )

	    for($i=0; $i < count($this->bands); ++$i) {

		// Stroke all bands that asks to be in the foreground

		if( $this->bands[$i]->depth == DEPTH_FRONT )

		    $this->bands[$i]->Stroke($this->img,$this->xscale,$this->yscale);

	    }



	if( $this->y2bands!= null && $this->y2scale != null )

	    for($i=0; $i < count($this->y2bands); ++$i) {

		// Stroke all bands that asks to be in the foreground

		if( $this->y2bands[$i]->depth == DEPTH_FRONT )

		    $this->y2bands[$i]->Stroke($this->img,$this->xscale,$this->y2scale);

	    }





	// Stroke any lines added

	if( $this->lines != null ) {

	    for($i=0; $i < count($this->lines); ++$i) {

		$this->lines[$i]->Stroke($this->img,$this->xscale,$this->yscale);

		$this->lines[$i]->DoLegend($this);

	    }

	}



	if( $this->y2lines != null && $this->y2scale != null ) {

	    for($i=0; $i < count($this->y2lines); ++$i) {

		$this->y2lines[$i]->Stroke($this->img,$this->xscale,$this->y2scale);

		$this->y2lines[$i]->DoLegend($this);

	    }

	}



	// Finally draw the axis again since some plots may have nagged

	// the axis in the edges.

	if( !$_csim ) {

	    $this->StrokeAxis();

	}



	if( $this->y2scale != null && !$_csim ) 

	    $this->y2axis->Stroke($this->xscale,false); 	

		

	if( !$_csim ) {

	    $this->StrokePlotBox();

	}

		

	// The titles and legends never gets rotated so make sure

	// that the angle is 0 before stroking them				

	$aa = $this->img->SetAngle(0);

	$this->StrokeTitles();

	$this->footer->Stroke($this->img);

	$this->legend->Stroke($this->img);		

	$this->img->SetAngle($aa);	

	$this->StrokeTexts();	

	$this->StrokeTables();



	if( !$_csim ) {



	    $this->img->SetAngle($aa);	

			

	    // Draw an outline around the image map	

	    if(_JPG_DEBUG) {

		$this->DisplayClientSideaImageMapAreas();		

	    }

	    

	    // Should we do any final image transformation

	    if( $this->iImgTrans ) {

		if( !class_exists('ImgTrans',false) ) {

		    require_once('jpgraph_imgtrans.php');

		    //JpGraphError::Raise('In order to use image transformation you must include the file jpgraph_imgtrans.php in your script.');

		}

	       

		$tform = new ImgTrans($this->img->img);

		$this->img->img = $tform->Skew3D($this->iImgTransHorizon,$this->iImgTransSkewDist,

						 $this->iImgTransDirection,$this->iImgTransHighQ,

						 $this->iImgTransMinSize,$this->iImgTransFillColor,

						 $this->iImgTransBorder);

	    }



	    // If the filename is given as the special "__handle"

	    // then the image handler is returned and the image is NOT

	    // streamed back

	    if( $aStrokeFileName == _IMG_HANDLER ) {

		return $this->img->img;

	    }

	    else {

		// Finally stream the generated picture					

		$this->cache->PutAndStream($this->img,$this->cache_name,$this->inline,$aStrokeFileName);		

	    }

	}

    }



    function SetAxisLabelBackground($aType,$aXFColor='lightgray',$aXColor='black',$aYFColor='lightgray',$aYColor='black') {

	$this->iAxisLblBgType = $aType;

	$this->iXAxisLblBgFillColor = $aXFColor;

	$this->iXAxisLblBgColor = $aXColor;

	$this->iYAxisLblBgFillColor = $aYFColor;

	$this->iYAxisLblBgColor = $aYColor;

    }



//---------------

// PRIVATE METHODS	



    function StrokeAxisLabelBackground() {

	// Types 

	// 0 = No background

	// 1 = Only X-labels, length of axis

	// 2 = Only Y-labels, length of axis

	// 3 = As 1 but extends to width of graph

	// 4 = As 2 but extends to height of graph

	// 5 = Combination of 3 & 4

	// 6 = Combination of 1 & 2

 

	$t = $this->iAxisLblBgType ;

	if( $t < 1 ) return;

	// Stroke optional X-axis label background color

	if( $t == 1 || $t == 3 || $t == 5 || $t == 6 ) {

	    $this->img->PushColor($this->iXAxisLblBgFillColor);

	    if( $t == 1 || $t == 6 ) {

		$xl = $this->img->left_margin;

		$yu = $this->img->height - $this->img->bottom_margin + 1;

		$xr = $this->img->width - $this->img->right_margin ;

		$yl = $this->img->height-1-$this->frame_weight;

	    }

	    else { // t==3 || t==5

		$xl = $this->frame_weight;

		$yu = $this->img->height - $this->img->bottom_margin + 1;

		$xr = $this->img->width - 1 - $this->frame_weight;

		$yl = $this->img->height-1-$this->frame_weight;

	    }



	    $this->img->FilledRectangle($xl,$yu,$xr,$yl);

	    $this->img->PopColor();



	    // Check if we should add the vertical lines at left and right edge

	    if( $this->iXAxisLblBgColor !== '' ) {

		$this->img->PushColor($this->iXAxisLblBgColor);

		if( $t == 1 || $t == 6 ) {

		    $this->img->Line($xl,$yu,$xl,$yl);

		    $this->img->Line($xr,$yu,$xr,$yl);

		}

		else {

		    $xl = $this->img->width - $this->img->right_margin ;

		    $this->img->Line($xl,$yu-1,$xr,$yu-1);

		}

		$this->img->PopColor();

	    }

	}



	if( $t == 2 || $t == 4 || $t == 5 || $t == 6 ) {

	    $this->img->PushColor($this->iYAxisLblBgFillColor);

	    if( $t == 2 || $t == 6 ) {	    

		$xl = $this->frame_weight;

		$yu = $this->frame_weight+$this->img->top_margin;

		$xr = $this->img->left_margin - 1;

		$yl = $this->img->height - $this->img->bottom_margin + 1;

	    }

	    else {

		$xl = $this->frame_weight;

		$yu = $this->frame_weight;

		$xr = $this->img->left_margin - 1;

		$yl = $this->img->height-1-$this->frame_weight;

	    }



	    $this->img->FilledRectangle($xl,$yu,$xr,$yl);

	    $this->img->PopColor();



	    // Check if we should add the vertical lines at left and right edge

	    if( $this->iXAxisLblBgColor !== '' ) {

		$this->img->PushColor($this->iXAxisLblBgColor);

		if( $t == 2 || $t == 6 ) {

		    $this->img->Line($xl,$yu-1,$xr,$yu-1);

		    $this->img->Line($xl,$yl-1,$xr,$yl-1);		    

		}

		else {

		    $this->img->Line($xr+1,$yu,$xr+1,$this->img->top_margin);		    

		}

		$this->img->PopColor();

	    }



	}

    }



    function StrokeAxis($aStrokeLabels=true) {

	

	if( $aStrokeLabels ) {

	    $this->StrokeAxisLabelBackground();

	}



	// Stroke axis

	if( $this->iAxisStyle != AXSTYLE_SIMPLE ) {

	    switch( $this->iAxisStyle ) {

	        case AXSTYLE_BOXIN :

	            $toppos = SIDE_DOWN;

		    $bottompos = SIDE_UP;

	            $leftpos = SIDE_RIGHT;

	            $rightpos = SIDE_LEFT;

	            break;

		case AXSTYLE_BOXOUT :

		    $toppos = SIDE_UP;

	            $bottompos = SIDE_DOWN;	    

	            $leftpos = SIDE_LEFT;

		    $rightpos = SIDE_RIGHT;

	            break;

		case AXSTYLE_YBOXIN:

	            $toppos = FALSE; 

		    $bottompos = SIDE_UP;

	            $leftpos = SIDE_RIGHT;

	            $rightpos = SIDE_LEFT;

		    break;

		case AXSTYLE_YBOXOUT:

		    $toppos = FALSE;

	            $bottompos = SIDE_DOWN;	    

	            $leftpos = SIDE_LEFT;

		    $rightpos = SIDE_RIGHT;

		    break;

		default:

	            JpGRaphError::RaiseL(25036,$this->iAxisStyle); //('Unknown AxisStyle() : '.$this->iAxisStyle);

	            break;

	    }

	    

	    // By default we hide the first label so it doesn't cross the

	    // Y-axis in case the positon hasn't been set by the user.

	    // However, if we use a box we always want the first value

	    // displayed so we make sure it will be displayed.

	    $this->xscale->ticks->SupressFirst(false);    



	    // Now draw the bottom X-axis

	    $this->xaxis->SetPos('min');

	    $this->xaxis->SetLabelSide(SIDE_DOWN);

	    $this->xaxis->scale->ticks->SetSide($bottompos);

	    $this->xaxis->Stroke($this->yscale,$aStrokeLabels);



	    if( $toppos !== FALSE ) {

		// We also want a top X-axis

		$this->xaxis = $this->xaxis;

		$this->xaxis->SetPos('max');

		$this->xaxis->SetLabelSide(SIDE_UP);

		// No title for the top X-axis 

		if( $aStrokeLabels ) {

		    $this->xaxis->title->Set('');

		}

		$this->xaxis->scale->ticks->SetSide($toppos);

		$this->xaxis->Stroke($this->yscale,$aStrokeLabels);

	    }



	    // Stroke the left Y-axis

	    $this->yaxis->SetPos('min');

	    $this->yaxis->SetLabelSide(SIDE_LEFT);

	    $this->yaxis->scale->ticks->SetSide($leftpos);

	    $this->yaxis->Stroke($this->xscale,$aStrokeLabels);



	    // Stroke the  right Y-axis

	    $this->yaxis->SetPos('max');

	    // No title for the right side 

	    if( $aStrokeLabels ) {

		$this->yaxis->title->Set('');

	    }

	    $this->yaxis->SetLabelSide(SIDE_RIGHT);

	    $this->yaxis->scale->ticks->SetSide($rightpos);

	    $this->yaxis->Stroke($this->xscale,$aStrokeLabels);  

	}

	else {

	    $this->xaxis->Stroke($this->yscale,$aStrokeLabels);

	    $this->yaxis->Stroke($this->xscale,$aStrokeLabels);		

	}

    }





    // Private helper function for backgound image

    static function LoadBkgImage($aImgFormat='',$aFile='',$aImgStr='') {

	if( $aImgStr != '' ) {

	    return Image::CreateFromString($aImgStr);

	}



	// Remove case sensitivity and setup appropriate function to create image

	// Get file extension. This should be the LAST '.' separated part of the filename

	$e = explode('.',$aFile);

	$ext = strtolower($e[count($e)-1]);

	if ($ext == "jpeg")  {

	    $ext = "jpg";

	}

	

	if( trim($ext) == '' ) 

	    $ext = 'png';  // Assume PNG if no extension specified



	if( $aImgFormat == '' )

	    $imgtag = $ext;

	else

	    $imgtag = $aImgFormat;



	$supported = imagetypes();

	if( ( $ext == 'jpg' && !($supported & IMG_JPG) ) ||

	    ( $ext == 'gif' && !($supported & IMG_GIF) ) ||

	    ( $ext == 'png' && !($supported & IMG_PNG) ) ||

	    ( $ext == 'bmp' && !($supported & IMG_WBMP) ) ||

	    ( $ext == 'xpm' && !($supported & IMG_XPM) ) ) {



	    JpGraphError::RaiseL(25037,$aFile);//('The image format of your background image ('.$aFile.') is not supported in your system configuration. ');

	}





	if( $imgtag == "jpg" || $imgtag == "jpeg")

	{

	    $f = "imagecreatefromjpeg";

	    $imgtag = "jpg";

	}

	else

	{

	    $f = "imagecreatefrom".$imgtag;

	}



	// Compare specified image type and file extension

	if( $imgtag != $ext ) {

	    //$t = "Background image seems to be of different type (has different file extension) than specified imagetype. Specified: '".$aImgFormat."'File: '".$aFile."'";

	    JpGraphError::RaiseL(25038, $aImgFormat, $aFile);

	}



	$img = @$f($aFile);

	if( !$img ) {

	    JpGraphError::RaiseL(25039,$aFile);//(" Can't read background image: '".$aFile."'");   

	}

	return $img;

    }	



    function StrokeBackgroundGrad() {

	if( $this->bkg_gradtype < 0  ) 

	    return;

	$grad = new Gradient($this->img);

	if( $this->bkg_gradstyle == BGRAD_PLOT ) {

	    $xl = $this->img->left_margin;

	    $yt = $this->img->top_margin;

	    $xr = $xl + $this->img->plotwidth+1 ;

	    $yb = $yt + $this->img->plotheight ; 

	    $grad->FilledRectangle($xl,$yt,$xr,$yb,$this->bkg_gradfrom,$this->bkg_gradto,$this->bkg_gradtype);

	}

	else {

	    $xl = 0;

	    $yt = 0;

	    $xr = $xl + $this->img->width - 1;

	    $yb = $yt + $this->img->height ;

	    if( $this->doshadow  ) {

		$xr -= $this->shadow_width; 

		$yb -= $this->shadow_width; 

	    }

	    if( $this->doframe ) {

		$yt += $this->frame_weight;

		$yb -= $this->frame_weight;    

		$xl += $this->frame_weight;

		$xr -= $this->frame_weight;

	    }

	    $aa = $this->img->SetAngle(0);

	    $grad->FilledRectangle($xl,$yt,$xr,$yb,$this->bkg_gradfrom,$this->bkg_gradto,$this->bkg_gradtype);

	    $aa = $this->img->SetAngle($aa);

	}

    }



    function StrokeFrameBackground() {

	if( $this->background_image != "" && $this->background_cflag != "" ) {

	    JpGraphError::RaiseL(25040);//('It is not possible to specify both a background image and a background country flag.');

	}

	if( $this->background_image != "" ) {

	    $bkgimg = $this->LoadBkgImage($this->background_image_format,$this->background_image);

	}

	elseif( $this->background_cflag != "" ) {

	    if( ! class_exists('FlagImages',false) ) {

		JpGraphError::RaiseL(25041);//('In order to use Country flags as backgrounds you must include the "jpgraph_flags.php" file.');

	    }

	    $fobj = new FlagImages(FLAGSIZE4);

	    $dummy='';

	    $bkgimg = $fobj->GetImgByName($this->background_cflag,$dummy);

	    $this->background_image_mix = $this->background_cflag_mix;

	    $this->background_image_type = $this->background_cflag_type;

	}

	else {

	    return ;

	}



	$bw = ImageSX($bkgimg);

	$bh = ImageSY($bkgimg);



	// No matter what the angle is we always stroke the image and frame

	// assuming it is 0 degree

	$aa = $this->img->SetAngle(0);

		

	switch( $this->background_image_type ) {

	    case BGIMG_FILLPLOT: // Resize to just fill the plotarea

		$this->FillMarginArea();

		$this->StrokeFrame();

		// Special case to hande 90 degree rotated graph corectly

		if( $aa == 90 ) {

		    $this->img->SetAngle(90);

		    $this->FillPlotArea();

		    $aa = $this->img->SetAngle(0);

		    $adj = ($this->img->height - $this->img->width)/2;

		    $this->img->CopyMerge($bkgimg,

					  $this->img->bottom_margin-$adj,$this->img->left_margin+$adj,

					  0,0,

					  $this->img->plotheight+1,$this->img->plotwidth,

					  $bw,$bh,$this->background_image_mix);



		}

		else {

		    $this->FillPlotArea();

		    $this->img->CopyMerge($bkgimg,

					  $this->img->left_margin,$this->img->top_margin,

					  0,0,$this->img->plotwidth+1,$this->img->plotheight,

					  $bw,$bh,$this->background_image_mix);

		}

		break;

	    case BGIMG_FILLFRAME: // Fill the whole area from upper left corner, resize to just fit

		$hadj=0; $vadj=0;

		if( $this->doshadow ) {

		    $hadj = $this->shadow_width;

		    $vadj = $this->shadow_width;

		}

		$this->FillMarginArea();

		$this->FillPlotArea();

		$this->img->CopyMerge($bkgimg,0,0,0,0,$this->img->width-$hadj,$this->img->height-$vadj,

				      $bw,$bh,$this->background_image_mix);

		$this->StrokeFrame();

		break;

	    case BGIMG_COPY: // Just copy the image from left corner, no resizing

		$this->FillMarginArea();

		$this->FillPlotArea();

		$this->img->CopyMerge($bkgimg,0,0,0,0,$bw,$bh,

				      $bw,$bh,$this->background_image_mix);

		$this->StrokeFrame();

		break;

	    case BGIMG_CENTER: // Center original image in the plot area

		$this->FillMarginArea();

		$this->FillPlotArea();

		$centerx = round($this->img->plotwidth/2+$this->img->left_margin-$bw/2);

		$centery = round($this->img->plotheight/2+$this->img->top_margin-$bh/2);

		$this->img->CopyMerge($bkgimg,$centerx,$centery,0,0,$bw,$bh,

				      $bw,$bh,$this->background_image_mix);

		$this->StrokeFrame();

		break;

	    default:

		JpGraphError::RaiseL(25042);//(" Unknown background image layout");

	}			

	$this->img->SetAngle($aa);		

    }



    // Private

    // Draw a frame around the image

    function StrokeFrame() {

	if( !$this->doframe ) return;



	if( $this->background_image_type <= 1 && 

	    ($this->bkg_gradtype < 0 || ($this->bkg_gradtype > 0 && $this->bkg_gradstyle==BGRAD_PLOT)) ) { 

	    $c = $this->margin_color;

	}

	else {

	    $c = false;

	}

	

	if( $this->doshadow ) {

	    $this->img->SetColor($this->frame_color);			

	    $this->img->ShadowRectangle(0,0,$this->img->width,$this->img->height,

					$c,$this->shadow_width,$this->shadow_color);

	}

	elseif( $this->framebevel ) {

	    if( $c ) {

		$this->img->SetColor($this->margin_color);

		$this->img->FilledRectangle(0,0,$this->img->width-1,$this->img->height-1); 

	    }

	    $this->img->Bevel(1,1,$this->img->width-2,$this->img->height-2,

			      $this->framebeveldepth,

			      $this->framebevelcolor1,$this->framebevelcolor2);

	    if( $this->framebevelborder ) {

		$this->img->SetColor($this->framebevelbordercolor);

		$this->img->Rectangle(0,0,$this->img->width-1,$this->img->height-1);

	    }

	}

	else {

	    $this->img->SetLineWeight($this->frame_weight);

	    if( $c ) {

		$this->img->SetColor($this->margin_color);

		$this->img->FilledRectangle(0,0,$this->img->width-1,$this->img->height-1); 

	    }

	    $this->img->SetColor($this->frame_color);

	    $this->img->Rectangle(0,0,$this->img->width-1,$this->img->height-1);		

	}

    }



    function FillMarginArea() {

	$hadj=0; $vadj=0;

	if( $this->doshadow ) {

	    $hadj = $this->shadow_width;

	    $vadj = $this->shadow_width;

	}



	$this->img->SetColor($this->margin_color);

//	$this->img->FilledRectangle(0,0,$this->img->width-1-$hadj,$this->img->height-1-$vadj); 



	$this->img->FilledRectangle(0,0,$this->img->width-1-$hadj,$this->img->top_margin); 

	$this->img->FilledRectangle(0,$this->img->top_margin,$this->img->left_margin,$this->img->height-1-$hadj); 

	$this->img->FilledRectangle($this->img->left_margin+1,

				    $this->img->height-$this->img->bottom_margin,

				    $this->img->width-1-$hadj,

				    $this->img->height-1-$hadj); 

	$this->img->FilledRectangle($this->img->width-$this->img->right_margin,

				    $this->img->top_margin+1,

				    $this->img->width-1-$hadj,

				    $this->img->height-$this->img->bottom_margin-1); 

    }



    function FillPlotArea() {

	$this->img->PushColor($this->plotarea_color);

	$this->img->FilledRectangle($this->img->left_margin,

				    $this->img->top_margin,

				    $this->img->width-$this->img->right_margin,

				    $this->img->height-$this->img->bottom_margin);	

	$this->img->PopColor();

    }

    

    // Stroke the plot area with either a solid color or a background image

    function StrokePlotArea() {

	// Note: To be consistent we really should take a possible shadow

	// into account. However, that causes some problem for the LinearScale class

	// since in the current design it does not have any links to class Graph which

	// means it has no way of compensating for the adjusted plotarea in case of a 

	// shadow. So, until I redesign LinearScale we can't compensate for this.

	// So just set the two adjustment parameters to zero for now.

	$boxadj = 0; //$this->doframe ? $this->frame_weight : 0 ;

	$adj = 0; //$this->doshadow ? $this->shadow_width : 0 ;



	if( $this->background_image != "" || $this->background_cflag != "" ) {

	    $this->StrokeFrameBackground();

	}

	else {

	    $aa = $this->img->SetAngle(0);

	    $this->StrokeFrame();

	    $aa = $this->img->SetAngle($aa);

	    $this->StrokeBackgroundGrad();

	    if( $this->bkg_gradtype < 0 || 

		($this->bkg_gradtype > 0 && $this->bkg_gradstyle==BGRAD_MARGIN) ) {

		$this->FillPlotArea();

	    }

	}	

    }	



    function StrokeIcons() {

	$n = count($this->iIcons);

	for( $i=0; $i < $n; ++$i ) {

	    $this->iIcons[$i]->StrokeWithScale($this->img,$this->xscale,$this->yscale);

	}

    }

	

    function StrokePlotBox() {

	// Should we draw a box around the plot area?

	if( $this->boxed ) {

	    $this->img->SetLineWeight(1);

	    $this->img->SetLineStyle('solid');

	    $this->img->SetColor($this->box_color);

	    for($i=0; $i < $this->box_weight; ++$i ) {

		$this->img->Rectangle(

		    $this->img->left_margin-$i,$this->img->top_margin-$i,

		    $this->img->width-$this->img->right_margin+$i,

		    $this->img->height-$this->img->bottom_margin+$i);

	    }

	}						

    }		



    function SetTitleBackgroundFillStyle($aStyle,$aColor1='black',$aColor2='white') {

	$this->titlebkg_fillstyle = $aStyle;

	$this->titlebkg_scolor1 = $aColor1;

	$this->titlebkg_scolor2 = $aColor2;

    }



    function SetTitleBackground($aBackColor='gray', $aStyle=TITLEBKG_STYLE1, $aFrameStyle=TITLEBKG_FRAME_NONE, $aFrameColor='black', $aFrameWeight=1, $aBevelHeight=3, $aEnable=true) {

	$this->titlebackground = $aEnable;

	$this->titlebackground_color = $aBackColor;

	$this->titlebackground_style = $aStyle;

	$this->titlebackground_framecolor = $aFrameColor;

	$this->titlebackground_framestyle = $aFrameStyle;

	$this->titlebackground_frameweight = $aFrameWeight;	

	$this->titlebackground_bevelheight = $aBevelHeight ;

    }





    function StrokeTitles() {



	$margin=3;



	if( $this->titlebackground ) {



	    // Find out height

	    $this->title->margin += 2 ;

	    $h = $this->title->GetTextHeight($this->img)+$this->title->margin+$margin;

	    if( $this->subtitle->t != "" && !$this->subtitle->hide ) {

		$h += $this->subtitle->GetTextHeight($this->img)+$margin+

		    $this->subtitle->margin;

		$h += 2;

	    }

	    if( $this->subsubtitle->t != "" && !$this->subsubtitle->hide ) {

		$h += $this->subsubtitle->GetTextHeight($this->img)+$margin+

		    $this->subsubtitle->margin;

		$h += 2;

	    }

	    $this->img->PushColor($this->titlebackground_color);

	    if( $this->titlebackground_style === TITLEBKG_STYLE1 ) {

		// Inside the frame

		if( $this->framebevel ) {

		    $x1 = $y1 = $this->framebeveldepth + 1 ;

		    $x2 = $this->img->width - $this->framebeveldepth - 2 ; 

		    $this->title->margin += $this->framebeveldepth + 1 ;

		    $h += $y1 ;

		    $h += 2;

		}

		else {

		    $x1 = $y1 = $this->frame_weight;

		    $x2 = $this->img->width - 2*$x1;

		}

	    }

	    elseif( $this->titlebackground_style === TITLEBKG_STYLE2 ) {

		// Cover the frame as well

		$x1 = $y1 = 0;

		$x2 = $this->img->width - 1 ;

	    }

	    elseif( $this->titlebackground_style === TITLEBKG_STYLE3 ) {

		// Cover the frame as well (the difference is that

		// for style==3 a bevel frame border is on top

		// of the title background)

		$x1 = $y1 = 0;

		$x2 = $this->img->width - 1 ;

		$h += $this->framebeveldepth ;

		$this->title->margin += $this->framebeveldepth ;

	    }

	    else {

		JpGraphError::RaiseL(25043);//('Unknown title background style.');

	    }



	    if( $this->titlebackground_framestyle === 3 ) {

		$h += $this->titlebackground_bevelheight*2 + 1  ;

		$this->title->margin += $this->titlebackground_bevelheight ;

	    }



	    if( $this->doshadow ) {

		$x2 -= $this->shadow_width ;

	    }

	    

	    $indent=0;

	    if( $this->titlebackground_framestyle == TITLEBKG_FRAME_BEVEL ) {

		$ind = $this->titlebackground_bevelheight;

	    }



	    if( $this->titlebkg_fillstyle==TITLEBKG_FILLSTYLE_HSTRIPED ) {

		$this->img->FilledRectangle2($x1+$ind,$y1+$ind,$x2-$ind,$h-$ind,

					     $this->titlebkg_scolor1,

					     $this->titlebkg_scolor2);

	    }

	    elseif( $this->titlebkg_fillstyle==TITLEBKG_FILLSTYLE_VSTRIPED ) {

		$this->img->FilledRectangle2($x1+$ind,$y1+$ind,$x2-$ind,$h-$ind,

					     $this->titlebkg_scolor1,

					     $this->titlebkg_scolor2,2);

	    }

	    else {

		// Solid fill

		$this->img->FilledRectangle($x1,$y1,$x2,$h);

	    }

	    $this->img->PopColor();



	    $this->img->PushColor($this->titlebackground_framecolor);

	    $this->img->SetLineWeight($this->titlebackground_frameweight);

	    if( $this->titlebackground_framestyle == TITLEBKG_FRAME_FULL ) {

		// Frame background

		$this->img->Rectangle($x1,$y1,$x2,$h);

	    }

	    elseif( $this->titlebackground_framestyle == TITLEBKG_FRAME_BOTTOM ) {

		// Bottom line only

		$this->img->Line($x1,$h,$x2,$h);

	    }

	    elseif( $this->titlebackground_framestyle == TITLEBKG_FRAME_BEVEL ) {

		$this->img->Bevel($x1,$y1,$x2,$h,$this->titlebackground_bevelheight);

	    }

	    $this->img->PopColor();



	    // This is clumsy. But we neeed to stroke the whole graph frame if it is

	    // set to bevel to get the bevel shading on top of the text background

	    if( $this->framebevel && $this->doframe && 

		$this->titlebackground_style === 3 ) {

		$this->img->Bevel(1,1,$this->img->width-2,$this->img->height-2,

				  $this->framebeveldepth,

				  $this->framebevelcolor1,$this->framebevelcolor2);

		if( $this->framebevelborder ) {

		    $this->img->SetColor($this->framebevelbordercolor);

		    $this->img->Rectangle(0,0,$this->img->width-1,$this->img->height-1);

		}

	    }

	}



	// Stroke title

	$y = $this->title->margin; 

	if( $this->title->halign == 'center' ) 

	    $this->title->Center(0,$this->img->width,$y);

	elseif( $this->title->halign == 'left' ) {

	    $this->title->SetPos($this->title->margin+2,$y);

	}

	elseif( $this->title->halign == 'right' ) {

	    $indent = 0;

	    if( $this->doshadow ) 

		$indent = $this->shadow_width+2;

	    $this->title->SetPos($this->img->width-$this->title->margin-$indent,$y,'right');	    

	}

	$this->title->Stroke($this->img);

		

	// ... and subtitle

	$y += $this->title->GetTextHeight($this->img) + $margin + $this->subtitle->margin;

	if( $this->subtitle->halign == 'center' ) 

	    $this->subtitle->Center(0,$this->img->width,$y);

	elseif( $this->subtitle->halign == 'left' ) {

	    $this->subtitle->SetPos($this->subtitle->margin+2,$y);

	}

	elseif( $this->subtitle->halign == 'right' ) {

	    $indent = 0;

	    if( $this->doshadow ) 

		$indent = $this->shadow_width+2;

	    $this->subtitle->SetPos($this->img->width-$this->subtitle->margin-$indent,$y,'right'); 

	}

	$this->subtitle->Stroke($this->img);



	// ... and subsubtitle

	$y += $this->subtitle->GetTextHeight($this->img) + $margin + $this->subsubtitle->margin;

	if( $this->subsubtitle->halign == 'center' ) 

	    $this->subsubtitle->Center(0,$this->img->width,$y);

	elseif( $this->subsubtitle->halign == 'left' ) {

	    $this->subsubtitle->SetPos($this->subsubtitle->margin+2,$y);

	}

	elseif( $this->subsubtitle->halign == 'right' ) {

	    $indent = 0;

	    if( $this->doshadow ) 

		$indent = $this->shadow_width+2;

	    $this->subsubtitle->SetPos($this->img->width-$this->subsubtitle->margin-$indent,$y,'right'); 

	}

	$this->subsubtitle->Stroke($this->img);



	// ... and fancy title

	$this->tabtitle->Stroke($this->img);



    }



    function StrokeTexts() {

	// Stroke any user added text objects

	if( $this->texts != null ) {

	    for($i=0; $i < count($this->texts); ++$i) {

		$this->texts[$i]->StrokeWithScale($this->img,$this->xscale,$this->yscale);

	    }

	}



	if( $this->y2texts != null && $this->y2scale != null ) {

	    for($i=0; $i < count($this->y2texts); ++$i) {

		$this->y2texts[$i]->StrokeWithScale($this->img,$this->xscale,$this->y2scale);

	    }

	}



    }



    function StrokeTables() {

	if( $this->iTables != null ) {

	    $n = count($this->iTables);

	    for( $i=0; $i < $n; ++$i ) {

		$this->iTables[$i]->StrokeWithScale($this->img,$this->xscale,$this->yscale);

	    }

	}

    }



    function DisplayClientSideaImageMapAreas() {

	// Debug stuff - display the outline of the image map areas

	$csim='';

	foreach ($this->plots as $p) {

	    $csim.= $p->GetCSIMareas();

	}

	$csim .= $this->legend->GetCSIMareas();

	if (preg_match_all("/area shape=\"(\w+)\" coords=\"([0-9\, ]+)\"/", $csim, $coords)) {

	    $this->img->SetColor($this->csimcolor);

	    $n = count($coords[0]);

	    for ($i=0; $i < $n; $i++) {

		if ($coords[1][$i]=="poly") {

		    preg_match_all('/\s*([0-9]+)\s*,\s*([0-9]+)\s*,*/',$coords[2][$i],$pts);

		    $this->img->SetStartPoint($pts[1][count($pts[0])-1],$pts[2][count($pts[0])-1]);

		    $m = count($pts[0]);

		    for ($j=0; $j < $m; $j++) {

			$this->img->LineTo($pts[1][$j],$pts[2][$j]);

		    }

		} else if ($coords[1][$i]=="rect") {

		    $pts = preg_split('/,/', $coords[2][$i]);

		    $this->img->SetStartPoint($pts[0],$pts[1]);

		    $this->img->LineTo($pts[2],$pts[1]);

		    $this->img->LineTo($pts[2],$pts[3]);

		    $this->img->LineTo($pts[0],$pts[3]);

		    $this->img->LineTo($pts[0],$pts[1]);					

		}

	    }

	}

    }



    // Text scale offset in world coordinates

    function SetTextScaleOff($aOff) {

	$this->text_scale_off = $aOff;

	$this->xscale->text_scale_off = $aOff;

    }



    // Text width of bar to be centered in absolute pixels

    function SetTextScaleAbsCenterOff($aOff) {

	$this->text_scale_abscenteroff = $aOff;

    }



    // Get Y min and max values for added lines

    function GetLinesYMinMax( $aLines ) {

	$n = count($aLines);

	if( $n == 0 ) return false;

	$min = $aLines[0]->scaleposition ;

	$max = $min ;

	$flg = false;

	for( $i=0; $i < $n; ++$i ) {

	    if( $aLines[$i]->direction == HORIZONTAL ) {

		$flg = true ;

		$v = $aLines[$i]->scaleposition ;

		if( $min > $v ) $min = $v ;

		if( $max < $v ) $max = $v ;

	    }

	}

	return $flg ? array($min,$max) : false ;

    }



    // Get X min and max values for added lines

    function GetLinesXMinMax( $aLines ) {

	$n = count($aLines);

	if( $n == 0 ) return false ;

	$min = $aLines[0]->scaleposition ;

	$max = $min ;

	$flg = false;

	for( $i=0; $i < $n; ++$i ) {

	    if( $aLines[$i]->direction == VERTICAL ) {

		$flg = true ;

		$v = $aLines[$i]->scaleposition ;

		if( $min > $v ) $min = $v ;

		if( $max < $v ) $max = $v ;

	    }

	}

	return $flg ? array($min,$max) : false ;

    }



    // Get min and max values for all included plots

    function GetPlotsYMinMax($aPlots) {

	$n = count($aPlots);

	$i=0;

	do { 

	    list($xmax,$max) = $aPlots[$i]->Max();

	} while( ++$i < $n && !is_numeric($max) );



	$i=0;

	do { 

	    list($xmin,$min) = $aPlots[$i]->Min();

	} while( ++$i < $n && !is_numeric($min) );

	

	if( !is_numeric($min) || !is_numeric($max) ) {

	    JpGraphError::RaiseL(25044);//('Cannot use autoscaling since it is impossible to determine a valid min/max value  of the Y-axis (only null values).');

	}



	for($i=0; $i < $n; ++$i ) {

	    list($xmax,$ymax)=$aPlots[$i]->Max();

	    list($xmin,$ymin)=$aPlots[$i]->Min();

	    if (is_numeric($ymax)) $max=max($max,$ymax);

	    if (is_numeric($ymin)) $min=min($min,$ymin);

	}

	if( $min == '' ) $min = 0;

	if( $max == '' ) $max = 0;

	if( $min == 0 && $max == 0 ) {

	    // Special case if all values are 0

	    $min=0;$max=1;			

	}

	return array($min,$max);

    }



} // Class



//===================================================

// CLASS LineProperty

// Description: Holds properties for a line

//===================================================

class LineProperty {

    public $iWeight=1, $iColor="black",$iStyle="solid",$iShow=true;

	

//---------------

// PUBLIC METHODS	

    function SetColor($aColor) {

	$this->iColor = $aColor;

    }

	

    function SetWeight($aWeight) {

	$this->iWeight = $aWeight;

    }

	

    function SetStyle($aStyle) {

	$this->iStyle = $aStyle;

    }

		

    function Show($aShow=true) {

	$this->iShow=$aShow;

    }

	

    function Stroke($aImg,$aX1,$aY1,$aX2,$aY2) {

	if( $this->iShow ) {

	    $aImg->PushColor($this->iColor);

	    $oldls = $aImg->line_style;

	    $oldlw = $aImg->line_weight;

	    $aImg->SetLineWeight($this->iWeight);

	    $aImg->SetLineStyle($this->iStyle);			

	    $aImg->StyleLine($aX1,$aY1,$aX2,$aY2);

	    $aImg->PopColor($this->iColor);

	    $aImg->line_style = $oldls;

	    $aImg->line_weight = $oldlw;



	}

    }

}





//===================================================

// CLASS Text

// Description: Arbitrary text object that can be added to the graph

//===================================================

class Text {

    public $t,$margin=0;

    public $x=0,$y=0,$halign="left",$valign="top",$color=array(0,0,0);

    public $hide=false, $dir=0;

    public $iScalePosY=null,$iScalePosX=null;

    public $iWordwrap=0;

    public $font_family=FF_FONT1,$font_style=FS_NORMAL,$font_size=12;

    protected $boxed=false;	// Should the text be boxed

    protected $paragraph_align="left";

    protected $icornerradius=0,$ishadowwidth=3;

    protected $fcolor='white',$bcolor='black',$shadow=false;

    protected $iCSIMarea='',$iCSIMalt='',$iCSIMtarget='',$iCSIMWinTarget='';



//---------------

// CONSTRUCTOR



    // Create new text at absolute pixel coordinates

    function Text($aTxt="",$aXAbsPos=0,$aYAbsPos=0) {

	if( ! is_string($aTxt) ) {

	    JpGraphError::RaiseL(25050);//('First argument to Text::Text() must be s atring.');

	}

	$this->t = $aTxt;

	$this->x = round($aXAbsPos);

	$this->y = round($aYAbsPos);

	$this->margin = 0;

    }

//---------------

// PUBLIC METHODS	

    // Set the string in the text object

    function Set($aTxt) {

	$this->t = $aTxt;

    }

	

    // Alias for Pos()

    function SetPos($aXAbsPos=0,$aYAbsPos=0,$aHAlign="left",$aVAlign="top") {

	//$this->Pos($aXAbsPos,$aYAbsPos,$aHAlign,$aVAlign);

	$this->x = $aXAbsPos;

	$this->y = $aYAbsPos;

	$this->halign = $aHAlign;

	$this->valign = $aVAlign;

    }



    function SetScalePos($aX,$aY) {

	$this->iScalePosX = $aX;

	$this->iScalePosY = $aY;

    }

	

    // Specify alignment for the text

    function Align($aHAlign,$aVAlign="top",$aParagraphAlign="") {

	$this->halign = $aHAlign;

	$this->valign = $aVAlign;

	if( $aParagraphAlign != "" )

	    $this->paragraph_align = $aParagraphAlign;

    }		

    

    // Alias

    function SetAlign($aHAlign,$aVAlign="top",$aParagraphAlign="") {

	$this->Align($aHAlign,$aVAlign,$aParagraphAlign);

    }



    // Specifies the alignment for a multi line text

    function ParagraphAlign($aAlign) {

	$this->paragraph_align = $aAlign;

    }



    // Specifies the alignment for a multi line text

    function SetParagraphAlign($aAlign) {

	$this->paragraph_align = $aAlign;

    }



    function SetShadow($aShadowColor='gray',$aShadowWidth=3) {

	$this->ishadowwidth=$aShadowWidth;

	$this->shadow=$aShadowColor;

	$this->boxed=true;

    }



    function SetWordWrap($aCol) {

	$this->iWordwrap = $aCol ;

    }

	

    // Specify that the text should be boxed. fcolor=frame color, bcolor=border color,

    // $shadow=drop shadow should be added around the text.

    function SetBox($aFrameColor=array(255,255,255),$aBorderColor=array(0,0,0),$aShadowColor=false,$aCornerRadius=4,$aShadowWidth=3) {

	if( $aFrameColor==false )

	    $this->boxed=false;

	else

	    $this->boxed=true;

	$this->fcolor=$aFrameColor;

	$this->bcolor=$aBorderColor;

	// For backwards compatibility when shadow was just true or false

	if( $aShadowColor === true )

	    $aShadowColor = 'gray';

	$this->shadow=$aShadowColor;

	$this->icornerradius=$aCornerRadius;

	$this->ishadowwidth=$aShadowWidth;

    }

	

    // Hide the text

    function Hide($aHide=true) {

	$this->hide=$aHide;

    }

	

    // This looks ugly since it's not a very orthogonal design 

    // but I added this "inverse" of Hide() to harmonize

    // with some classes which I designed more recently (especially) 

    // jpgraph_gantt

    function Show($aShow=true) {

	$this->hide=!$aShow;

    }

	

    // Specify font

    function SetFont($aFamily,$aStyle=FS_NORMAL,$aSize=10) {

	$this->font_family=$aFamily;

	$this->font_style=$aStyle;

	$this->font_size=$aSize;

    }

			

    // Center the text between $left and $right coordinates

    function Center($aLeft,$aRight,$aYAbsPos=false) {

	$this->x = $aLeft + ($aRight-$aLeft	)/2;

	$this->halign = "center";

	if( is_numeric($aYAbsPos) )

	    $this->y = $aYAbsPos;		

    }

	

    // Set text color

    function SetColor($aColor) {

	$this->color = $aColor;

    }

	

    function SetAngle($aAngle) {

	$this->SetOrientation($aAngle);

    }

	

    // Orientation of text. Note only TTF fonts can have an arbitrary angle

    function SetOrientation($aDirection=0) {

	if( is_numeric($aDirection) )

	    $this->dir=$aDirection;	

	elseif( $aDirection=="h" )

	    $this->dir = 0;

	elseif( $aDirection=="v" )

	    $this->dir = 90;

	else JpGraphError::RaiseL(25051);//(" Invalid direction specified for text.");

    }

	

    // Total width of text

    function GetWidth($aImg) {

	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);

	$w = $aImg->GetTextWidth($this->t,$this->dir);

	return $w;	

    }

	

    // Hight of font

    function GetFontHeight($aImg) {

	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);

	$h = $aImg->GetFontHeight();

	return $h;



    }



    function GetTextHeight($aImg) {

	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);	

	$h = $aImg->GetTextHeight($this->t,$this->dir);

	return $h;

    }



    function GetHeight($aImg) {

	// Synonym for GetTextHeight()

	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);	

	$h = $aImg->GetTextHeight($this->t,$this->dir);

	return $h;

    }



    // Set the margin which will be interpretated differently depending

    // on the context.

    function SetMargin($aMarg) {

	$this->margin = $aMarg;

    }



    function StrokeWithScale($aImg,$axscale,$ayscale) {

	if( $this->iScalePosX === null ||

	    $this->iScalePosY === null ) {

	    $this->Stroke($aImg);

	}

	else {

	    $this->Stroke($aImg,

			  round($axscale->Translate($this->iScalePosX)),

			  round($ayscale->Translate($this->iScalePosY)));

	}

    }



    function SetCSIMTarget($aURITarget,$aAlt='',$aWinTarget='') {

	$this->iCSIMtarget = $aURITarget;

	$this->iCSIMalt = $aAlt;

	$this->iCSIMWinTarget = $aWinTarget;

    }



    function GetCSIMareas() {

	if( $this->iCSIMtarget !== '' ) 

	    return $this->iCSIMarea;

	else

	    return '';

    }



    // Display text in image

    function Stroke($aImg,$x=null,$y=null) {



	if( !empty($x) ) $this->x = round($x);

	if( !empty($y) ) $this->y = round($y);



	// Insert newlines

	if( $this->iWordwrap > 0 ) {

	    $this->t = wordwrap($this->t,$this->iWordwrap,"\n");

	}



	// If position been given as a fraction of the image size

	// calculate the absolute position

	if( $this->x < 1 && $this->x > 0 ) $this->x *= $aImg->width;

	if( $this->y < 1 && $this->y > 0 ) $this->y *= $aImg->height;



	$aImg->PushColor($this->color);	

	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);

	$aImg->SetTextAlign($this->halign,$this->valign);

	if( $this->boxed ) {

	    if( $this->fcolor=="nofill" ) 

		$this->fcolor=false;		

	    $aImg->SetLineWeight(1);

	    $bbox = $aImg->StrokeBoxedText($this->x,$this->y,$this->t,

				   $this->dir,$this->fcolor,$this->bcolor,$this->shadow,

				   $this->paragraph_align,5,5,$this->icornerradius,

				   $this->ishadowwidth);

	}

	else {

	    $bbox = $aImg->StrokeText($this->x,$this->y,$this->t,$this->dir,$this->paragraph_align);

	}



	// Create CSIM targets

	$coords = $bbox[0].','.$bbox[1].','.$bbox[2].','.$bbox[3].','.$bbox[4].','.$bbox[5].','.$bbox[6].','.$bbox[7];

	$this->iCSIMarea = "<area shape=\"poly\" coords=\"$coords\" href=\"".htmlentities($this->iCSIMtarget)."\" ";

	if( trim($this->iCSIMalt) != '' ) {

	    $this->iCSIMarea .= " alt=\"".$this->iCSIMalt."\" "; 

	    $this->iCSIMarea .= " title=\"".$this->iCSIMalt."\" ";

	}

	if( trim($this->iCSIMWinTarget) != '' ) {

	    $this->iCSIMarea .= " target=\"".$this->iCSIMWinTarget."\" "; 

	}

	$this->iCSIMarea .= " />\n";



	$aImg->PopColor($this->color);	



    }

} // Class



class GraphTabTitle extends Text{

    private $corner = 6 , $posx = 7, $posy = 4;

    private $fillcolor='lightyellow',$bordercolor='black';

    private $align = 'left', $width=TABTITLE_WIDTHFIT;

    function GraphTabTitle() {

	$this->t = '';

	$this->font_style = FS_BOLD;

	$this->hide = true;

	$this->color = 'darkred';

    }



    function SetColor($aTxtColor,$aFillColor='lightyellow',$aBorderColor='black') {

	$this->color = $aTxtColor;

	$this->fillcolor = $aFillColor;

	$this->bordercolor = $aBorderColor;

    }



    function SetFillColor($aFillColor) {

	$this->fillcolor = $aFillColor;

    }



    function SetTabAlign($aAlign) {

	$this->align = $aAlign;

    }

    

    function SetWidth($aWidth) {

	$this->width = $aWidth ;

    }



    function Set($t) {

	$this->t = $t;

	$this->hide = false;

    }



    function SetCorner($aD) {

	$this->corner = $aD ;

    }



    function Stroke($aImg,$aDummy1=null,$aDummy2=null) {

	if( $this->hide ) 

	    return;

	$this->boxed = false;

	$w = $this->GetWidth($aImg) + 2*$this->posx;

	$h = $this->GetTextHeight($aImg) + 2*$this->posy;



	$x = $aImg->left_margin;

	$y = $aImg->top_margin;



	if( $this->width === TABTITLE_WIDTHFIT ) {

	    if( $this->align == 'left' ) {

		$p = array($x,                $y,

			   $x,                $y-$h+$this->corner,

			   $x + $this->corner,$y-$h,

			   $x + $w - $this->corner, $y-$h,

			   $x + $w, $y-$h+$this->corner,

			   $x + $w, $y);

	    }

	    elseif( $this->align == 'center' ) {

		$x += round($aImg->plotwidth/2) - round($w/2);

		$p = array($x, $y,

			   $x, $y-$h+$this->corner,

			   $x + $this->corner, $y-$h,

			   $x + $w - $this->corner, $y-$h,

			   $x + $w, $y-$h+$this->corner,

			   $x + $w, $y);

	    }

	    else {

		$x += $aImg->plotwidth -$w;

		$p = array($x, $y,

			   $x, $y-$h+$this->corner,

			   $x + $this->corner,$y-$h,

			   $x + $w - $this->corner, $y-$h,

			   $x + $w, $y-$h+$this->corner,

			   $x + $w, $y);

	    }

	}

	else {

	    if( $this->width === TABTITLE_WIDTHFULL )

		$w = $aImg->plotwidth ;

	    else

		$w = $this->width ;



	    // Make the tab fit the width of the plot area

	    $p = array($x,                $y,

		       $x,                $y-$h+$this->corner,

		       $x + $this->corner,$y-$h,

		       $x + $w - $this->corner, $y-$h,

		       $x + $w, $y-$h+$this->corner,

		       $x + $w, $y);

	    

	}

	if( $this->halign == 'left' ) {

	    $aImg->SetTextAlign('left','bottom');

	    $x += $this->posx;

	    $y -= $this->posy;

	}

	elseif( $this->halign == 'center' ) {

	    $aImg->SetTextAlign('center','bottom');

	    $x += $w/2; 

	    $y -= $this->posy;

	}

	else {

	    $aImg->SetTextAlign('right','bottom');

	    $x += $w - $this->posx;

	    $y -= $this->posy;

	}



	$aImg->SetColor($this->fillcolor);

	$aImg->FilledPolygon($p);



	$aImg->SetColor($this->bordercolor);

	$aImg->Polygon($p,true);

	

	$aImg->SetColor($this->color);

	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);

	$aImg->StrokeText($x,$y,$this->t,0,'center');

    }



}



//===================================================

// CLASS SuperScriptText

// Description: Format a superscript text

//===================================================

class SuperScriptText extends Text {

    private $iSuper="";

    private $sfont_family="",$sfont_style="",$sfont_size=8;

    private $iSuperMargin=2,$iVertOverlap=4,$iSuperScale=0.65;

    private $iSDir=0;

    private $iSimple=false;



    function SuperScriptText($aTxt="",$aSuper="",$aXAbsPos=0,$aYAbsPos=0) {

	parent::Text($aTxt,$aXAbsPos,$aYAbsPos);

	$this->iSuper = $aSuper;

    }



    function FromReal($aVal,$aPrecision=2) {

	// Convert a floating point number to scientific notation

	$neg=1.0;

	if( $aVal < 0 ) {

	    $neg = -1.0;

	    $aVal = -$aVal;

	}

		

	$l = floor(log10($aVal));

	$a = sprintf("%0.".$aPrecision."f",round($aVal / pow(10,$l),$aPrecision));

	$a *= $neg;

	if( $this->iSimple && ($a == 1 || $a==-1) ) $a = '';

	

	if( $a != '' )

	    $this->t = $a.' * 10';

	else {

	    if( $neg == 1 )

		$this->t = '10';

	    else

		$this->t = '-10';

	}

	$this->iSuper = $l;

    }



    function Set($aTxt,$aSuper="") {

	$this->t = $aTxt;

	$this->iSuper = $aSuper;

    }



    function SetSuperFont($aFontFam,$aFontStyle=FS_NORMAL,$aFontSize=8) {

	$this->sfont_family = $aFontFam;

	$this->sfont_style = $aFontStyle;

	$this->sfont_size = $aFontSize;

    }



    // Total width of text

    function GetWidth($aImg) {

	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);

	$w = $aImg->GetTextWidth($this->t);

	$aImg->SetFont($this->sfont_family,$this->sfont_style,$this->sfont_size);

	$w += $aImg->GetTextWidth($this->iSuper);

	$w += $this->iSuperMargin;

	return $w;

    }

	

    // Hight of font (approximate the height of the text)

    function GetFontHeight($aImg) {

	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);	

	$h = $aImg->GetFontHeight();

	$aImg->SetFont($this->sfont_family,$this->sfont_style,$this->sfont_size);

	$h += $aImg->GetFontHeight();

	return $h;

    }



    // Hight of text

    function GetTextHeight($aImg) {

	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);

	$h = $aImg->GetTextHeight($this->t);

	$aImg->SetFont($this->sfont_family,$this->sfont_style,$this->sfont_size);

	$h += $aImg->GetTextHeight($this->iSuper);

	return $h;

    }



    function Stroke($aImg,$ax=-1,$ay=-1) {

	

        // To position the super script correctly we need different

	// cases to handle the alignmewnt specified since that will

	// determine how we can interpret the x,y coordinates

	

	$w = parent::GetWidth($aImg);

	$h = parent::GetTextHeight($aImg);

	switch( $this->valign ) {

	    case 'top':

		$sy = $this->y;

		break;

	    case 'center':

		$sy = $this->y - $h/2;

		break;

	    case 'bottom':

		$sy = $this->y - $h;

		break;

	    default:

		JpGraphError::RaiseL(25052);//('PANIC: Internal error in SuperScript::Stroke(). Unknown vertical alignment for text');

		break;

	}



	switch( $this->halign ) {

	    case 'left':

		$sx = $this->x + $w;

		break;

	    case 'center':

		$sx = $this->x + $w/2;

		break;

	    case 'right':

		$sx = $this->x;

		break;

	    default:

		JpGraphError::RaiseL(25053);//('PANIC: Internal error in SuperScript::Stroke(). Unknown horizontal alignment for text');

		break;

	}



	$sx += $this->iSuperMargin;

	$sy += $this->iVertOverlap;



	// Should we automatically determine the font or

	// has the user specified it explicetly?

	if( $this->sfont_family == "" ) {

	    if( $this->font_family <= FF_FONT2 ) {

		if( $this->font_family == FF_FONT0 ) {

		    $sff = FF_FONT0;

		}

		elseif( $this->font_family == FF_FONT1 ) {

		    if( $this->font_style == FS_NORMAL )

			$sff = FF_FONT0;

		    else

			$sff = FF_FONT1;

		}

		else {

		    $sff = FF_FONT1;

		}

		$sfs = $this->font_style;

		$sfz = $this->font_size;

	    }

	    else {

		// TTF fonts

		$sff = $this->font_family;

		$sfs = $this->font_style;

		$sfz = floor($this->font_size*$this->iSuperScale);		

		if( $sfz < 8 ) $sfz = 8;

	    }	    

	    $this->sfont_family = $sff;

	    $this->sfont_style = $sfs;

	    $this->sfont_size = $sfz;	    

	} 

	else {

	    $sff = $this->sfont_family;

	    $sfs = $this->sfont_style;

	    $sfz = $this->sfont_size;	    

	}



	parent::Stroke($aImg,$ax,$ay);





	// For the builtin fonts we need to reduce the margins

	// since the bounding bx reported for the builtin fonts

	// are much larger than for the TTF fonts.

	if( $sff <= FF_FONT2 ) {

	    $sx -= 2;

	    $sy += 3;

	}



	$aImg->SetTextAlign('left','bottom');	

	$aImg->SetFont($sff,$sfs,$sfz);

	$aImg->PushColor($this->color);	

	$aImg->StrokeText($sx,$sy,$this->iSuper,$this->iSDir,'left');

	$aImg->PopColor();	

    }

}





//===================================================

// CLASS Grid

// Description: responsible for drawing grid lines in graph

//===================================================

class Grid {

    protected $img;

    protected $scale;

    protected $grid_color='#DDDDDD',$grid_mincolor='#DDDDDD';

    protected $type="solid";

    protected $show=false, $showMinor=false,$weight=1;

    protected $fill=false,$fillcolor=array('#EFEFEF','#BBCCFF');

//---------------

// CONSTRUCTOR

    function Grid($aAxis) {

	$this->scale = $aAxis->scale;

	$this->img = $aAxis->img;

    }

//---------------

// PUBLIC METHODS

    function SetColor($aMajColor,$aMinColor=false) {

	$this->grid_color=$aMajColor;

	if( $aMinColor === false ) 

	    $aMinColor = $aMajColor ;

	$this->grid_mincolor = $aMinColor;

    }

	

    function SetWeight($aWeight) {

	$this->weight=$aWeight;

    }

	

    // Specify if grid should be dashed, dotted or solid

    function SetLineStyle($aType) {

	$this->type = $aType;

    }

	

    // Decide if both major and minor grid should be displayed

    function Show($aShowMajor=true,$aShowMinor=false) {

	$this->show=$aShowMajor;

	$this->showMinor=$aShowMinor;

    }

    

    function SetFill($aFlg=true,$aColor1='lightgray',$aColor2='lightblue') {

	$this->fill = $aFlg;

	$this->fillcolor = array( $aColor1, $aColor2 );

    }

	

    // Display the grid

    function Stroke() {

	if( $this->showMinor && !$this->scale->textscale ) {

	    $tmp = $this->grid_color;

	    $this->grid_color = $this->grid_mincolor;

	    $this->DoStroke($this->scale->ticks->ticks_pos);



	    $this->grid_color = $tmp;

	    $this->DoStroke($this->scale->ticks->maj_ticks_pos);

	}

	else {

	    $this->DoStroke($this->scale->ticks->maj_ticks_pos);

	}

    }

	

//--------------

// Private methods	

    // Draw the grid

    function DoStroke($aTicksPos) {

	if( !$this->show )

	    return;	

	$nbrgrids = count($aTicksPos);	



	if( $this->scale->type=="y" ) {

	    $xl=$this->img->left_margin;

	    $xr=$this->img->width-$this->img->right_margin;

	    

	    if( $this->fill ) {

		// Draw filled areas

		$y2 = $aTicksPos[0];

		$i=1;

		while( $i < $nbrgrids ) {

		    $y1 = $y2;

		    $y2 = $aTicksPos[$i++];

		    $this->img->SetColor($this->fillcolor[$i & 1]);

		    $this->img->FilledRectangle($xl,$y1,$xr,$y2);

		}

	    }



	    $this->img->SetColor($this->grid_color);

	    $this->img->SetLineWeight($this->weight);



	    // Draw grid lines

	    switch( $this->type ) {

		case "solid":  $style = LINESTYLE_SOLID; break;

		case "dotted": $style = LINESTYLE_DOTTED; break;

		case "dashed": $style = LINESTYLE_DASHED; break;

		case "longdashed": $style = LINESTYLE_LONGDASH; break;

		default:

		    $style = LINESTYLE_SOLID; break;

	    }



	    for($i=0; $i < $nbrgrids; ++$i) {

		$y=$aTicksPos[$i];

		$this->img->StyleLine($xl,$y,$xr,$y,$style);

	    }

	}

	elseif( $this->scale->type=="x" ) {	

	    $yu=$this->img->top_margin;

	    $yl=$this->img->height-$this->img->bottom_margin;

	    $limit=$this->img->width-$this->img->right_margin;



	    if( $this->fill ) {

		// Draw filled areas

		$x2 = $aTicksPos[0];

		$i=1;

		while( $i < $nbrgrids ) {

		    $x1 = $x2;

		    $x2 = min($aTicksPos[$i++],$limit) ;

		    $this->img->SetColor($this->fillcolor[$i & 1]);

		    $this->img->FilledRectangle($x1,$yu,$x2,$yl);

		}

	    }



	    $this->img->SetColor($this->grid_color);

	    $this->img->SetLineWeight($this->weight);



	    // We must also test for limit since we might have

	    // an offset and the number of ticks is calculated with

	    // assumption offset==0 so we might end up drawing one

	    // to many gridlines

	    $i=0;

	    $x=$aTicksPos[$i];	    

	    while( $i<count($aTicksPos) && ($x=$aTicksPos[$i]) <= $limit ) {

		if( $this->type == "solid" )				

		    $this->img->Line($x,$yl,$x,$yu);

		elseif( $this->type == "dotted" )

		    $this->img->DashedLine($x,$yl,$x,$yu,1,6);

		elseif( $this->type == "dashed" )

		    $this->img->DashedLine($x,$yl,$x,$yu,2,4);

		elseif( $this->type == "longdashed" )

		    $this->img->DashedLine($x,$yl,$x,$yu,8,6);	

		++$i;  

	    }

	}	

	else {

	    JpGraphError::RaiseL(25054,$this->scale->type);//('Internal error: Unknown grid axis ['.$this->scale->type.']');

	}

	return true;

    }

} // Class



//===================================================

// CLASS Axis

// Description: Defines X and Y axis. Notes that at the

// moment the code is not really good since the axis on

// several occasion must know wheter it's an X or Y axis.

// This was a design decision to make the code easier to

// follow. 

//===================================================

class AxisPrototype {

    public $scale=null; 

    public $img=null;

    public $hide=false,$hide_labels=false;

    public $title=null;

    public $font_family=FF_FONT1,$font_style=FS_NORMAL,$font_size=12,$label_angle=0;

    public $tick_step=1;

    public $pos = false;

    public $ticks_label = array();



    protected $weight=1;

    protected $color=array(0,0,0),$label_color=array(0,0,0);

    protected $ticks_label_colors=null;

    protected $show_first_label=true,$show_last_label=true;

    protected $label_step=1; // Used by a text axis to specify what multiple of major steps

    // should be labeled.

    protected $labelPos=0;   // Which side of the axis should the labels be?

    protected $title_adjust,$title_margin,$title_side=SIDE_LEFT;

    protected $tick_label_margin=7;

    protected $label_halign = '',$label_valign = '', $label_para_align='left';

    protected $hide_line=false;

    protected $iDeltaAbsPos=0;



//---------------

// CONSTRUCTOR

    function Axis($img,$aScale,$color=array(0,0,0)) {

	$this->img = $img;

	$this->scale = $aScale;

	$this->color = $color;

	$this->title=new Text("");

		

	if( $aScale->type=="y" ) {

	    $this->title_margin = 25;

	    $this->title_adjust="middle";

	    $this->title->SetOrientation(90);

	    $this->tick_label_margin=7;

	    $this->labelPos=SIDE_LEFT;

	}

	else {

	    $this->title_margin = 5;

	    $this->title_adjust="high";

	    $this->title->SetOrientation(0);			

	    $this->tick_label_margin=7;

	    $this->labelPos=SIDE_DOWN;

	    $this->title_side=SIDE_DOWN;

	}

    }

//---------------

// PUBLIC METHODS	

	

    function SetLabelFormat($aFormStr) {

	$this->scale->ticks->SetLabelFormat($aFormStr);

    }



    function SetLabelFormatString($aFormStr,$aDate=false) {

	$this->scale->ticks->SetLabelFormat($aFormStr,$aDate);

    }

	

    function SetLabelFormatCallback($aFuncName) {

	$this->scale->ticks->SetFormatCallback($aFuncName);

    }



    function SetLabelAlign($aHAlign,$aVAlign="top",$aParagraphAlign='left') {

	$this->label_halign = $aHAlign;

	$this->label_valign = $aVAlign;

	$this->label_para_align = $aParagraphAlign;

    }		



    // Don't display the first label

    function HideFirstTickLabel($aShow=false) {

	$this->show_first_label=$aShow;

    }



    function HideLastTickLabel($aShow=false) {

	$this->show_last_label=$aShow;

    }



    // Manually specify the major and (optional) minor tick position and labels

    function SetTickPositions($aMajPos,$aMinPos=NULL,$aLabels=NULL) {

	$this->scale->ticks->SetTickPositions($aMajPos,$aMinPos,$aLabels);

    }



    // Manually specify major tick positions and optional labels

    function SetMajTickPositions($aMajPos,$aLabels=NULL) {

	$this->scale->ticks->SetTickPositions($aMajPos,NULL,$aLabels);

    }



    // Hide minor or major tick marks

    function HideTicks($aHideMinor=true,$aHideMajor=true) {

	$this->scale->ticks->SupressMinorTickMarks($aHideMinor);

	$this->scale->ticks->SupressTickMarks($aHideMajor);

    }



    // Hide zero label

    function HideZeroLabel($aFlag=true) {

	$this->scale->ticks->SupressZeroLabel();

    }

	

    function HideFirstLastLabel() {

	// The two first calls to ticks method will supress 

	// automatically generated scale values. However, that

	// will not affect manually specified value, e.g text-scales.

	// therefor we also make a kludge here to supress manually

	// specified scale labels.

	$this->scale->ticks->SupressLast();

	$this->scale->ticks->SupressFirst();

	$this->show_first_label	= false;

	$this->show_last_label = false;

    }

	

    // Hide the axis

    function Hide($aHide=true) {

	$this->hide=$aHide;

    }



    // Hide the actual axis-line, but still print the labels

    function HideLine($aHide=true) {

	$this->hide_line = $aHide;

    }



    function HideLabels($aHide=true) {

	$this->hide_labels = $aHide;

    }

    



    // Weight of axis

    function SetWeight($aWeight) {

	$this->weight = $aWeight;

    }



    // Axis color

    function SetColor($aColor,$aLabelColor=false) {

	$this->color = $aColor;

	if( !$aLabelColor ) $this->label_color = $aColor;

	else $this->label_color = $aLabelColor;

    }

	

    // Title on axis

    function SetTitle($aTitle,$aAdjustAlign="high") {

	$this->title->Set($aTitle);

	$this->title_adjust=$aAdjustAlign;

    }

	

    // Specify distance from the axis

    function SetTitleMargin($aMargin) {

	$this->title_margin=$aMargin;

    }

	

    // Which side of the axis should the axis title be?

    function SetTitleSide($aSideOfAxis) {

	$this->title_side = $aSideOfAxis;

    }



    // Utility function to set the direction for tick marks

    function SetTickDirection($aDir) {

    	// Will be deprecated from 1.7    	

    	if( ERR_DEPRECATED )

	    JpGraphError::RaiseL(25055);//('Axis::SetTickDirection() is deprecated. Use Axis::SetTickSide() instead');

	$this->scale->ticks->SetSide($aDir);

    }

    

    function SetTickSide($aDir) {

	$this->scale->ticks->SetSide($aDir);

    }

	

    // Specify text labels for the ticks. One label for each data point

    function SetTickLabels($aLabelArray,$aLabelColorArray=null) {

	$this->ticks_label = $aLabelArray;

	$this->ticks_label_colors = $aLabelColorArray;

    }

	

    // How far from the axis should the labels be drawn

    function SetTickLabelMargin($aMargin) {

	if( ERR_DEPRECATED )    	

	    JpGraphError::RaiseL(25056);//('SetTickLabelMargin() is deprecated. Use Axis::SetLabelMargin() instead.');

      	$this->tick_label_margin=$aMargin;

    }



    function SetLabelMargin($aMargin) {

	$this->tick_label_margin=$aMargin;

    }

	

    // Specify that every $step of the ticks should be displayed starting

    // at $start

    // DEPRECATED FUNCTION: USE SetTextTickInterval() INSTEAD

    function SetTextTicks($step,$start=0) {

	JpGraphError::RaiseL(25057);//(" SetTextTicks() is deprecated. Use SetTextTickInterval() instead.");		

    }



    // Specify that every $step of the ticks should be displayed starting

    // at $start	

    function SetTextTickInterval($aStep,$aStart=0) {

	$this->scale->ticks->SetTextLabelStart($aStart);

	$this->tick_step=$aStep;

    }

	 

    // Specify that every $step tick mark should have a label 

    // should be displayed starting

    function SetTextLabelInterval($aStep) {

	if( $aStep < 1 )

	    JpGraphError::RaiseL(25058);//(" Text label interval must be specified >= 1.");

	$this->label_step=$aStep;

    }

	

    // Which side of the axis should the labels be on?

    function SetLabelPos($aSidePos) {

    	// This will be deprecated from 1.7

	if( ERR_DEPRECATED )    	

	    JpGraphError::RaiseL(25059);//('SetLabelPos() is deprecated. Use Axis::SetLabelSide() instead.');

	$this->labelPos=$aSidePos;

    }

    

    function SetLabelSide($aSidePos) {

	$this->labelPos=$aSidePos;

    }



    // Set the font

    function SetFont($aFamily,$aStyle=FS_NORMAL,$aSize=10) {

	$this->font_family = $aFamily;

	$this->font_style = $aStyle;

	$this->font_size = $aSize;

    }



    // Position for axis line on the "other" scale

    function SetPos($aPosOnOtherScale) {

	$this->pos=$aPosOnOtherScale;

    }



    // Set the position of the axis to be X-pixels delta to the right 

    // of the max X-position (used to position the multiple Y-axis)

    function SetPosAbsDelta($aDelta) {

      $this->iDeltaAbsPos=$aDelta;

    }

	

    // Specify the angle for the tick labels

    function SetLabelAngle($aAngle) {

	$this->label_angle = $aAngle;

    }	



} // Class





//===================================================

// CLASS Axis

// Description: Defines X and Y axis. Notes that at the

// moment the code is not really good since the axis on

// several occasion must know wheter it's an X or Y axis.

// This was a design decision to make the code easier to

// follow. 

//===================================================

class Axis extends AxisPrototype {



    function Axis($img,$aScale,$color=array(0,0,0)) {

	parent::Axis($img,$aScale,$color);

    }

	

    // Stroke the axis.

    function Stroke($aOtherAxisScale,$aStrokeLabels=true) {		

	if( $this->hide ) return;		

	if( is_numeric($this->pos) ) {

	    $pos=$aOtherAxisScale->Translate($this->pos);

	}

	else {	// Default to minimum of other scale if pos not set		

	    if( ($aOtherAxisScale->GetMinVal() >= 0 && $this->pos==false) || $this->pos=="min" ) {

		$pos = $aOtherAxisScale->scale_abs[0];

	    }

	    elseif($this->pos == "max") {

		$pos = $aOtherAxisScale->scale_abs[1];

	    }

	    else { // If negative set x-axis at 0

		$this->pos=0;

		$pos=$aOtherAxisScale->Translate(0);

	    }

	}

	$pos += $this->iDeltaAbsPos;	

	$this->img->SetLineWeight($this->weight);

	$this->img->SetColor($this->color);		

	$this->img->SetFont($this->font_family,$this->font_style,$this->font_size);

	if( $this->scale->type == "x" ) {

	    if( !$this->hide_line ) 

		$this->img->FilledRectangle($this->img->left_margin,$pos,

					    $this->img->width-$this->img->right_margin,$pos+$this->weight-1);

	    if( $this->title_side == SIDE_DOWN ) {

		$y = $pos + $this->img->GetFontHeight() + $this->title_margin + $this->title->margin;

		$yalign = 'top';

	    }

	    else {

		$y = $pos - $this->img->GetFontHeight() - $this->title_margin - $this->title->margin;

		$yalign = 'bottom';

	    }



	    if( $this->title_adjust=='high' )

		$this->title->SetPos($this->img->width-$this->img->right_margin,$y,'right',$yalign);

	    elseif( $this->title_adjust=='middle' || $this->title_adjust=='center' ) 

		$this->title->SetPos(($this->img->width-$this->img->left_margin-$this->img->right_margin)/2+$this->img->left_margin,$y,'center',$yalign);

	    elseif($this->title_adjust=='low')

		$this->title->SetPos($this->img->left_margin,$y,'left',$yalign);

	    else {	

		JpGraphError::RaiseL(25060,$this->title_adjust);//('Unknown alignment specified for X-axis title. ('.$this->title_adjust.')');

	    }

	}

	elseif( $this->scale->type == "y" ) {

	    // Add line weight to the height of the axis since

	    // the x-axis could have a width>1 and we want the axis to fit nicely together.

	    if( !$this->hide_line ) 

		$this->img->FilledRectangle($pos-$this->weight+1,$this->img->top_margin,

					    $pos,$this->img->height-$this->img->bottom_margin+$this->weight-1);

	    $x=$pos ;

	    if( $this->title_side == SIDE_LEFT ) {

		$x -= $this->title_margin;

		$x -= $this->title->margin;

		$halign="right";

	    }

	    else {

		$x += $this->title_margin;

		$x += $this->title->margin;

		$halign="left";

	    }

	    // If the user has manually specified an hor. align

	    // then we override the automatic settings with this

	    // specifed setting. Since default is 'left' we compare

	    // with that. (This means a manually set 'left' align

	    // will have no effect.)

	    if( $this->title->halign != 'left' ) 

		$halign = $this->title->halign;

	    if( $this->title_adjust=="high" ) 

		$this->title->SetPos($x,$this->img->top_margin,$halign,"top"); 

	    elseif($this->title_adjust=="middle" || $this->title_adjust=="center")  

		$this->title->SetPos($x,($this->img->height-$this->img->top_margin-$this->img->bottom_margin)/2+$this->img->top_margin,$halign,"center");

	    elseif($this->title_adjust=="low")

		$this->title->SetPos($x,$this->img->height-$this->img->bottom_margin,$halign,"bottom");

	    else	

		JpGraphError::RaiseL(25061,$this->title_adjust);//('Unknown alignment specified for Y-axis title. ('.$this->title_adjust.')');

		

	}

	$this->scale->ticks->Stroke($this->img,$this->scale,$pos);

	if( $aStrokeLabels ) {

	    if( !$this->hide_labels )

		$this->StrokeLabels($pos);

	    $this->title->Stroke($this->img);

	}

    }



//---------------

// PRIVATE METHODS	

    // Draw all the tick labels on major tick marks

    function StrokeLabels($aPos,$aMinor=false,$aAbsLabel=false) {



	$this->img->SetColor($this->label_color);

	$this->img->SetFont($this->font_family,$this->font_style,$this->font_size);

	$yoff=$this->img->GetFontHeight()/2;



	// Only draw labels at major tick marks

	$nbr = count($this->scale->ticks->maj_ticks_label);



	// We have the option to not-display the very first mark

	// (Usefull when the first label might interfere with another

	// axis.)

	$i = $this->show_first_label ? 0 : 1 ;

	if( !$this->show_last_label ) --$nbr;

	// Now run through all labels making sure we don't overshoot the end

	// of the scale.	

	$ncolor=0;

	if( isset($this->ticks_label_colors) )

	    $ncolor=count($this->ticks_label_colors);

	while( $i<$nbr ) {

	    // $tpos holds the absolute text position for the label

	    $tpos=$this->scale->ticks->maj_ticklabels_pos[$i];



	    // Note. the $limit is only used for the x axis since we

	    // might otherwise overshoot if the scale has been centered

	    // This is due to us "loosing" the last tick mark if we center.

	    if( $this->scale->type=="x" && $tpos > $this->img->width-$this->img->right_margin+1 ) {

	    	return; 

	    }

	    // we only draw every $label_step label

	    if( ($i % $this->label_step)==0 ) {



		// Set specific label color if specified

		if( $ncolor > 0 )

		    $this->img->SetColor($this->ticks_label_colors[$i % $ncolor]);

		

		// If the label has been specified use that and in other case

		// just label the mark with the actual scale value 

		$m=$this->scale->ticks->GetMajor();

				

		// ticks_label has an entry for each data point and is the array

		// that holds the labels set by the user. If the user hasn't 

		// specified any values we use whats in the automatically asigned

		// labels in the maj_ticks_label

		if( isset($this->ticks_label[$i*$m]) )

		    $label=$this->ticks_label[$i*$m];

		else {

		    if( $aAbsLabel ) 

			$label=abs($this->scale->ticks->maj_ticks_label[$i]);

		    else

			$label=$this->scale->ticks->maj_ticks_label[$i];

		    if( $this->scale->textscale && $this->scale->ticks->label_formfunc == '' ) {

			++$label;

		    }

		}

					

		if( $this->scale->type == "x" ) {

		    if( $this->labelPos == SIDE_DOWN ) {

			if( $this->label_angle==0 || $this->label_angle==90 ) {

			    if( $this->label_halign=='' && $this->label_valign=='')

				$this->img->SetTextAlign('center','top');

			    else

			    	$this->img->SetTextAlign($this->label_halign,$this->label_valign);

			    

			}

			else {

			    if( $this->label_halign=='' && $this->label_valign=='')

				$this->img->SetTextAlign("right","top");

			    else

				$this->img->SetTextAlign($this->label_halign,$this->label_valign);

			}

			$this->img->StrokeText($tpos,$aPos+$this->tick_label_margin+1,$label,

					       $this->label_angle,$this->label_para_align);

		    }

		    else {

			if( $this->label_angle==0 || $this->label_angle==90 ) {

			    if( $this->label_halign=='' && $this->label_valign=='')

				$this->img->SetTextAlign("center","bottom");

			    else

			    	$this->img->SetTextAlign($this->label_halign,$this->label_valign);

			}

			else {

			    if( $this->label_halign=='' && $this->label_valign=='')

				$this->img->SetTextAlign("right","bottom");

			    else

			    	$this->img->SetTextAlign($this->label_halign,$this->label_valign);

			}

			$this->img->StrokeText($tpos,$aPos-$this->tick_label_margin-1,$label,

					       $this->label_angle,$this->label_para_align);

		    }

		}

		else {

		    // scale->type == "y"

		    //if( $this->label_angle!=0 ) 

		    //JpGraphError::Raise(" Labels at an angle are not supported on Y-axis");

		    if( $this->labelPos == SIDE_LEFT ) { // To the left of y-axis					

			if( $this->label_halign=='' && $this->label_valign=='')	

			    $this->img->SetTextAlign("right","center");

			else

			    $this->img->SetTextAlign($this->label_halign,$this->label_valign);

			$this->img->StrokeText($aPos-$this->tick_label_margin,$tpos,$label,$this->label_angle,$this->label_para_align);	

		    }

		    else { // To the right of the y-axis

			if( $this->label_halign=='' && $this->label_valign=='')	

			    $this->img->SetTextAlign("left","center");

			else

			    $this->img->SetTextAlign($this->label_halign,$this->label_valign);

			$this->img->StrokeText($aPos+$this->tick_label_margin,$tpos,$label,$this->label_angle,$this->label_para_align);	

		    }

		}

	    }

	    ++$i;	

	}								

    }			    



}





//===================================================

// CLASS Ticks

// Description: Abstract base class for drawing linear and logarithmic

// tick marks on axis

//===================================================

class Ticks {

    public $label_formatstr='';   // C-style format string to use for labels

    public $label_formfunc='';

    public $label_dateformatstr='';

    public $direction=1; // Should ticks be in(=1) the plot area or outside (=-1)

    public $supress_last=false,$supress_tickmarks=false,$supress_minor_tickmarks=false;

    public $maj_ticks_pos = array(), $maj_ticklabels_pos = array(), 

	   $ticks_pos = array(), $maj_ticks_label = array();

    public $precision;



    protected $minor_abs_size=3, $major_abs_size=5;

    protected $scale;

    protected $is_set=false;

    protected $supress_zerolabel=false,$supress_first=false;

    protected $mincolor="",$majcolor="";

    protected $weight=1;

    protected $label_usedateformat=FALSE;



//---------------

// CONSTRUCTOR

    function Ticks($aScale) {

	$this->scale=$aScale;

	$this->precision = -1;

    }



//---------------

// PUBLIC METHODS	

    // Set format string for automatic labels

    function SetLabelFormat($aFormatString,$aDate=FALSE) {

	$this->label_formatstr=$aFormatString;

	$this->label_usedateformat=$aDate;

    }

	

    function SetLabelDateFormat($aFormatString) {

	$this->label_dateformatstr=$aFormatString;

    }

	

    function SetFormatCallback($aCallbackFuncName) {

	$this->label_formfunc = $aCallbackFuncName;

    }

	

    // Don't display the first zero label

    function SupressZeroLabel($aFlag=true) {

	$this->supress_zerolabel=$aFlag;

    }

	

    // Don't display minor tick marks

    function SupressMinorTickMarks($aHide=true) {

	$this->supress_minor_tickmarks=$aHide;

    }

	

    // Don't display major tick marks

    function SupressTickMarks($aHide=true) {

	$this->supress_tickmarks=$aHide;

    }

	

    // Hide the first tick mark

    function SupressFirst($aHide=true) {

	$this->supress_first=$aHide;

    }

	

    // Hide the last tick mark

    function SupressLast($aHide=true) {

	$this->supress_last=$aHide;

    }



    // Size (in pixels) of minor tick marks

    function GetMinTickAbsSize() {

	return $this->minor_abs_size;

    }

	

    // Size (in pixels) of major tick marks

    function GetMajTickAbsSize() {

	return $this->major_abs_size;		

    }

	

    function SetSize($aMajSize,$aMinSize=3) {

	$this->major_abs_size = $aMajSize;		

	$this->minor_abs_size = $aMinSize;		

    }



    // Have the ticks been specified

    function IsSpecified() {

	return $this->is_set;

    }

		

    // Specify number of decimals in automatic labels

    // Deprecated from 1.4. Use SetFormatString() instead

    function SetPrecision($aPrecision) { 	

    	if( ERR_DEPRECATED )

	    JpGraphError::RaiseL(25063);//('Ticks::SetPrecision() is deprecated. Use Ticks::SetLabelFormat() (or Ticks::SetFormatCallback()) instead');

	$this->precision=$aPrecision;

    }



    function SetSide($aSide) {

	$this->direction=$aSide;

    }

	

    // Which side of the axis should the ticks be on

    function SetDirection($aSide=SIDE_RIGHT) {

	$this->direction=$aSide;

    }

	

    // Set colors for major and minor tick marks

    function SetMarkColor($aMajorColor,$aMinorColor="") {

	$this->SetColor($aMajorColor,$aMinorColor);

    }

    

    function SetColor($aMajorColor,$aMinorColor="") {

	$this->majcolor=$aMajorColor;

		

	// If not specified use same as major

	if( $aMinorColor=="" ) 

	    $this->mincolor=$aMajorColor;

	else

	    $this->mincolor=$aMinorColor;

    }

	

    function SetWeight($aWeight) {

	$this->weight=$aWeight;

    }

	

} // Class



//===================================================

// CLASS LinearTicks

// Description: Draw linear ticks on axis

//===================================================

class LinearTicks extends Ticks {

    public $minor_step=1, $major_step=2;

    public $xlabel_offset=0,$xtick_offset=0;

    private $label_offset=0; // What offset should the displayed label have

    // i.e should we display 0,1,2 or 1,2,3,4 or 2,3,4 etc

    private $text_label_start=0;

    private $iManualTickPos = NULL, $iManualMinTickPos = NULL, $iManualTickLabels = NULL;

    private $iAdjustForDST = false; // If a date falls within the DST period add one hour to the diaplyed time



//---------------

// CONSTRUCTOR

    function LinearTicks() {

	$this->precision = -1;

    }



//---------------

// PUBLIC METHODS	

	

	

    // Return major step size in world coordinates

    function GetMajor() {

	return $this->major_step;

    }

	

    // Return minor step size in world coordinates

    function GetMinor() {

	return $this->minor_step;

    }

	

    // Set Minor and Major ticks (in world coordinates)

    function Set($aMajStep,$aMinStep=false) {

	if( $aMinStep==false ) 

	    $aMinStep=$aMajStep;

    	

	if( $aMajStep <= 0 || $aMinStep <= 0 ) {

	    JpGraphError::RaiseL(25064);

//(" Minor or major step size is 0. Check that you haven't got an accidental SetTextTicks(0) in your code. If this is not the case you might have stumbled upon a bug in JpGraph. Please report this and if possible include the data that caused the problem.");

	}

		

	$this->major_step=$aMajStep;

	$this->minor_step=$aMinStep;

	$this->is_set = true;

    }



    function SetMajTickPositions($aMajPos,$aLabels=NULL) {

	$this->SetTickPositions($aMajPos,NULL,$aLabels);

    }



    function SetTickPositions($aMajPos,$aMinPos=NULL,$aLabels=NULL) {

	if( !is_array($aMajPos) || ($aMinPos!==NULL && !is_array($aMinPos)) ) {

	    JpGraphError::RaiseL(25065);//('Tick positions must be specifued as an array()');

	    return;

	}

	$n=count($aMajPos);

	if( is_array($aLabels) && (count($aLabels) != $n) ) {

	    JpGraphError::RaiseL(25066);//('When manually specifying tick positions and labels the number of labels must be the same as the number of specified ticks.');

	    return;

	}

	$this->iManualTickPos = $aMajPos;

	$this->iManualMinTickPos = $aMinPos;

	$this->iManualTickLabels = $aLabels;

    }



    // Specify all the tick positions manually and possible also the exact labels 

    function _doManualTickPos($aScale) { 

	$n=count($this->iManualTickPos);

	$m=count($this->iManualMinTickPos);

	$doLbl=count($this->iManualTickLabels) > 0;



	$this->maj_ticks_pos = array();

	$this->maj_ticklabels_pos = array();

	$this->ticks_pos = array();



	// Now loop through the supplied positions and translate them to screen coordinates

	// and store them in the maj_label_positions

	$minScale = $aScale->scale[0];

	$maxScale = $aScale->scale[1];

	$j=0;

	for($i=0; $i < $n ; ++$i ) {

	    // First make sure that the first tick is not lower than the lower scale value

	    if( !isset($this->iManualTickPos[$i])  || 

		$this->iManualTickPos[$i] < $minScale  || $this->iManualTickPos[$i] > $maxScale) {

		continue;

	    }





	    $this->maj_ticks_pos[$j] = $aScale->Translate($this->iManualTickPos[$i]);

	    $this->maj_ticklabels_pos[$j] = $this->maj_ticks_pos[$j];	



	    // Set the minor tick marks the same as major if not specified

	    if( $m <= 0 ) {

		$this->ticks_pos[$j] = $this->maj_ticks_pos[$j];

	    }



	    if( $doLbl ) { 

		$this->maj_ticks_label[$j] = $this->iManualTickLabels[$i];

	    }

	    else {

		$this->maj_ticks_label[$j]=$this->_doLabelFormat($this->iManualTickPos[$i],$i,$n);

	    }

	    ++$j;

	}



	// Some sanity check

	if( count($this->maj_ticks_pos) < 2 ) {

	    JpGraphError::RaiseL(25067);//('Your manually specified scale and ticks is not correct. The scale seems to be too small to hold any of the specified tickl marks.');

	}



	// Setup the minor tick marks

	$j=0;

	for($i=0; $i < $m; ++$i ) {

	    if(  empty($this->iManualMinTickPos[$i]) || 

		 $this->iManualMinTickPos[$i] < $minScale  || $this->iManualMinTickPos[$i] > $maxScale) 

		continue;

	    $this->ticks_pos[$j] = $aScale->Translate($this->iManualMinTickPos[$i]);

	    ++$j;

	}

    }



    function _doAutoTickPos($aScale) {

	$maj_step_abs = $aScale->scale_factor*$this->major_step;		

	$min_step_abs = $aScale->scale_factor*$this->minor_step;		



	if( $min_step_abs==0 || $maj_step_abs==0 ) {

	    JpGraphError::RaiseL(25068);//("A plot has an illegal scale. This could for example be that you are trying to use text autoscaling to draw a line plot with only one point or that the plot area is too small. It could also be that no input data value is numeric (perhaps only '-' or 'x')");

	}

	// We need to make this an int since comparing it below

	// with the result from round() can give wrong result, such that

	// (40 < 40) == TRUE !!!

	$limit = (int)$aScale->scale_abs[1];	



	if( $aScale->textscale ) {

	    // This can only be true for a X-scale (horizontal)

	    // Define ticks for a text scale. This is slightly different from a 

	    // normal linear type of scale since the position might be adjusted

	    // and the labels start at on

	    $label = (float)$aScale->GetMinVal()+$this->text_label_start+$this->label_offset;	

	    $start_abs=$aScale->scale_factor*$this->text_label_start;

	    $nbrmajticks=round(($aScale->GetMaxVal()-$aScale->GetMinVal()-$this->text_label_start )/$this->major_step)+1;	



	    $x = $aScale->scale_abs[0]+$start_abs+$this->xlabel_offset*$min_step_abs;	

	    for( $i=0; $label <= $aScale->GetMaxVal()+$this->label_offset; ++$i ) {

		// Apply format to label

		$this->maj_ticks_label[$i]=$this->_doLabelFormat($label,$i,$nbrmajticks);

		$label+=$this->major_step;



		// The x-position of the tick marks can be different from the labels.

		// Note that we record the tick position (not the label) so that the grid

		// happen upon tick marks and not labels.

		$xtick=$aScale->scale_abs[0]+$start_abs+$this->xtick_offset*$min_step_abs+$i*$maj_step_abs;

		$this->maj_ticks_pos[$i]=$xtick;

		$this->maj_ticklabels_pos[$i] = round($x);				

		$x += $maj_step_abs;

	    }

	}

	else {

	    $label = $aScale->GetMinVal();	

	    $abs_pos = $aScale->scale_abs[0];

	    $j=0; $i=0;

	    $step = round($maj_step_abs/$min_step_abs);

	    if( $aScale->type == "x" ) {

		// For a normal linear type of scale the major ticks will always be multiples

		// of the minor ticks. In order to avoid any rounding issues the major ticks are

		// defined as every "step" minor ticks and not calculated separately

		$nbrmajticks=round(($aScale->GetMaxVal()-$aScale->GetMinVal()-$this->text_label_start )/$this->major_step)+1; 

		while( round($abs_pos) <= $limit ) {

		    $this->ticks_pos[] = round($abs_pos);

		    $this->ticks_label[] = $label;

		    if( $step== 0 || $i % $step == 0 && $j < $nbrmajticks ) {

			$this->maj_ticks_pos[$j] = round($abs_pos);

			$this->maj_ticklabels_pos[$j] = round($abs_pos);

			$this->maj_ticks_label[$j]=$this->_doLabelFormat($label,$j,$nbrmajticks);

			++$j;

		    }

		    ++$i;

		    $abs_pos += $min_step_abs;

		    $label+=$this->minor_step;

		}

	    }

	    elseif( $aScale->type == "y" ) {

		$nbrmajticks=round(($aScale->GetMaxVal()-$aScale->GetMinVal())/$this->major_step)+1;

		while( round($abs_pos) >= $limit ) {

		    $this->ticks_pos[$i] = round($abs_pos); 

		    $this->ticks_label[$i]=$label;

		    if( $step== 0 || $i % $step == 0 && $j < $nbrmajticks) {

			$this->maj_ticks_pos[$j] = round($abs_pos);

			$this->maj_ticklabels_pos[$j] = round($abs_pos);

			$this->maj_ticks_label[$j]=$this->_doLabelFormat($label,$j,$nbrmajticks);

			++$j;

		    }

		    ++$i;

		    $abs_pos += $min_step_abs;

		    $label += $this->minor_step;

		}	

	    }

	}	

    }



    function AdjustForDST($aFlg=true) {

	$this->iAdjustForDST = $aFlg;

    }





    function _doLabelFormat($aVal,$aIdx,$aNbrTicks) {



	// If precision hasn't been specified set it to a sensible value

	if( $this->precision==-1 ) { 

	    $t = log10($this->minor_step);

	    if( $t > 0 )

		$precision = 0;

	    else

		$precision = -floor($t);

	}

	else

	    $precision = $this->precision;



	if( $this->label_formfunc != '' ) {

	    $f=$this->label_formfunc;

	    $l = call_user_func($f,$aVal);

	}	

	elseif( $this->label_formatstr != '' || $this->label_dateformatstr != '' ) {

	    if( $this->label_usedateformat ) {

		// Adjust the value to take daylight savings into account

		if (date("I",$aVal)==1 && $this->iAdjustForDST ) // DST

		    $aVal+=3600;



		$l = date($this->label_formatstr,$aVal);

		if( $this->label_formatstr == 'W' ) {

		    // If we use week formatting then add a single 'w' in front of the

		    // week number to differentiate it from dates

		    $l = 'w'.$l;

		}

	    }

	    else {

		if( $this->label_dateformatstr !== '' ) {

		    // Adjust the value to take daylight savings into account

		    if (date("I",$aVal)==1 && $this->iAdjustForDST ) // DST

			$aVal+=3600;



		    $l = date($this->label_dateformatstr,$aVal);

		    if( $this->label_formatstr == 'W' ) {

			// If we use week formatting then add a single 'w' in front of the

			// week number to differentiate it from dates

			$l = 'w'.$l;

		    }

		}

		else

		    $l = sprintf($this->label_formatstr,$aVal);

	    }

	}

	else {

	    $l = sprintf('%01.'.$precision.'f',round($aVal,$precision));

	}

	

	if( ($this->supress_zerolabel && $l==0) ||  ($this->supress_first && $aIdx==0) ||

	    ($this->supress_last  && $aIdx==$aNbrTicks-1) ) {

	    $l='';

	}

	return $l;

    }



    // Stroke ticks on either X or Y axis

    function _StrokeTicks($aImg,$aScale,$aPos) {

	$hor = $aScale->type == 'x';

	$aImg->SetLineWeight($this->weight);



	// We need to make this an int since comparing it below

	// with the result from round() can give wrong result, such that

	// (40 < 40) == TRUE !!!	

	$limit = (int)$aScale->scale_abs[1];

		

	// A text scale doesn't have any minor ticks

	if( !$aScale->textscale ) {

	    // Stroke minor ticks

	    $yu = $aPos - $this->direction*$this->GetMinTickAbsSize();

	    $xr = $aPos + $this->direction*$this->GetMinTickAbsSize();

	    $n = count($this->ticks_pos);

	    for($i=0; $i < $n; ++$i ) {

		if( !$this->supress_tickmarks && !$this->supress_minor_tickmarks) {

		    if( $this->mincolor!="" ) $aImg->PushColor($this->mincolor);

		    if( $hor ) {

			//if( $this->ticks_pos[$i] <= $limit ) 

			$aImg->Line($this->ticks_pos[$i],$aPos,$this->ticks_pos[$i],$yu); 

		    }

		    else {

			//if( $this->ticks_pos[$i] >= $limit ) 

			$aImg->Line($aPos,$this->ticks_pos[$i],$xr,$this->ticks_pos[$i]); 

		    }

		    if( $this->mincolor!="" ) $aImg->PopColor();

		}

	    }

	}



	// Stroke major ticks

	$yu = $aPos - $this->direction*$this->GetMajTickAbsSize();

	$xr = $aPos + $this->direction*$this->GetMajTickAbsSize();

	$nbrmajticks=round(($aScale->GetMaxVal()-$aScale->GetMinVal()-$this->text_label_start )/$this->major_step)+1;

	$n = count($this->maj_ticks_pos);

	for($i=0; $i < $n ; ++$i ) {

	    if(!($this->xtick_offset > 0 && $i==$nbrmajticks-1) && !$this->supress_tickmarks) {

		if( $this->majcolor!="" ) $aImg->PushColor($this->majcolor);

		if( $hor ) {

		    //if( $this->maj_ticks_pos[$i] <= $limit ) 

		    $aImg->Line($this->maj_ticks_pos[$i],$aPos,$this->maj_ticks_pos[$i],$yu); 

		}

		else {

		    //if( $this->maj_ticks_pos[$i] >= $limit ) 

		    $aImg->Line($aPos,$this->maj_ticks_pos[$i],$xr,$this->maj_ticks_pos[$i]); 

		}

		if( $this->majcolor!="" ) $aImg->PopColor();

	    }

	}

	

    }



    // Draw linear ticks

    function Stroke($aImg,$aScale,$aPos) {

	if( $this->iManualTickPos != NULL ) 

	    $this->_doManualTickPos($aScale);

	else 

	    $this->_doAutoTickPos($aScale);

	$this->_StrokeTicks($aImg,$aScale,$aPos, $aScale->type == 'x' );

    }



//---------------

// PRIVATE METHODS

    // Spoecify the offset of the displayed tick mark with the tick "space"

    // Legal values for $o is [0,1] used to adjust where the tick marks and label 

    // should be positioned within the major tick-size

    // $lo specifies the label offset and $to specifies the tick offset

    // this comes in handy for example in bar graphs where we wont no offset for the

    // tick but have the labels displayed halfway under the bars.

    function SetXLabelOffset($aLabelOff,$aTickOff=-1) {

	$this->xlabel_offset=$aLabelOff;

	if( $aTickOff==-1 )	// Same as label offset

	    $this->xtick_offset=$aLabelOff;

	else

	    $this->xtick_offset=$aTickOff;

	if( $aLabelOff>0 )

	    $this->SupressLast();	// The last tick wont fit

    }



    // Which tick label should we start with?

    function SetTextLabelStart($aTextLabelOff) {

	$this->text_label_start=$aTextLabelOff;

    }

	

} // Class



//===================================================

// CLASS LinearScale

// Description: Handle linear scaling between screen and world 

//===================================================

class LinearScale {

    public $textscale=false; // Just a flag to let the Plot class find out if

    // we are a textscale or not. This is a cludge since

    // this information is available in Graph::axtype but

    // we don't have access to the graph object in the Plots

    // stroke method. So we let graph store the status here

    // when the linear scale is created. A real cludge...

    public $type; // is this x or y scale ?

    public $ticks=null; // Store ticks

    public $text_scale_off = 0;

    public $scale_abs=array(0,0);

    public $scale_factor; // Scale factor between world and screen

    public $off; // Offset between image edge and plot area

    public $scale=array(0,0);

    public $name = 'lin';

    public $auto_ticks=false; // When using manual scale should the ticks be automatically set?

    public $world_abs_size; // Plot area size in pixels (Needed public in jpgraph_radar.php)

    public $world_size;	// Plot area size in world coordinates

    public $intscale=false; // Restrict autoscale to integers

    protected $autoscale_min=false; // Forced minimum value, auto determine max

    protected $autoscale_max=false; // Forced maximum value, auto determine min

    private $gracetop=0,$gracebottom=0;

//---------------

// CONSTRUCTOR

    function LinearScale($aMin=0,$aMax=0,$aType="y") {

	assert($aType=="x" || $aType=="y" );

	assert($aMin<=$aMax);

		

	$this->type=$aType;

	$this->scale=array($aMin,$aMax);		

	$this->world_size=$aMax-$aMin;	

	$this->ticks = new LinearTicks();

    }



//---------------

// PUBLIC METHODS	

    // Check if scale is set or if we should autoscale

    // We should do this is either scale or ticks has not been set

    function IsSpecified() {

	if( $this->GetMinVal()==$this->GetMaxVal() ) {		// Scale not set

	    return false;

	}

	return true;

    }

	

    // Set the minimum data value when the autoscaling is used. 

    // Usefull if you want a fix minimum (like 0) but have an

    // automatic maximum

    function SetAutoMin($aMin) {

	$this->autoscale_min=$aMin;

    }



    // Set the minimum data value when the autoscaling is used. 

    // Usefull if you want a fix minimum (like 0) but have an

    // automatic maximum

    function SetAutoMax($aMax) {

	$this->autoscale_max=$aMax;

    }



    // If the user manually specifies a scale should the ticks

    // still be set automatically?

    function SetAutoTicks($aFlag=true) {

	$this->auto_ticks = $aFlag;

    }



    // Specify scale "grace" value (top and bottom)

    function SetGrace($aGraceTop,$aGraceBottom=0) {

	if( $aGraceTop<0 || $aGraceBottom < 0  )

	    JpGraphError::RaiseL(25069);//(" Grace must be larger then 0");

	$this->gracetop=$aGraceTop;

	$this->gracebottom=$aGraceBottom;

    }

	

    // Get the minimum value in the scale

    function GetMinVal() {

	return $this->scale[0];

    }

	

    // get maximum value for scale

    function GetMaxVal() {

	return $this->scale[1];

    }

		

    // Specify a new min/max value for sclae	

    function Update($aImg,$aMin,$aMax) {

	$this->scale=array($aMin,$aMax);		

	$this->world_size=$aMax-$aMin;		

	$this->InitConstants($aImg);					

    }

	

    // Translate between world and screen

    function Translate($aCoord) {

	if( !is_numeric($aCoord) ) {

	    if( $aCoord != '' && $aCoord != '-' && $aCoord != 'x' ) 

		JpGraphError::RaiseL(25070);//('Your data contains non-numeric values.');

	    return 0;

	}

	else {

	    return $this->off+($aCoord - $this->scale[0]) * $this->scale_factor; 

	}

    }

	

    // Relative translate (don't include offset) usefull when we just want

    // to know the relative position (in pixels) on the axis

    function RelTranslate($aCoord) {

	if( !is_numeric($aCoord) ) {

	    if( $aCoord != '' && $aCoord != '-' && $aCoord != 'x'  ) 

		JpGraphError::RaiseL(25070);//('Your data contains non-numeric values.');

	    return 0;

	}

	else { 

	    return ($aCoord - $this->scale[0]) * $this->scale_factor; 

	}

    }

	

    // Restrict autoscaling to only use integers

    function SetIntScale($aIntScale=true) {

	$this->intscale=$aIntScale;

    }

	

    // Calculate an integer autoscale

    function IntAutoScale($img,$min,$max,$maxsteps,$majend=true) {

	// Make sure limits are integers

	$min=floor($min);

	$max=ceil($max);

	if( abs($min-$max)==0 ) {

	    --$min; ++$max;

	}

	$maxsteps = floor($maxsteps);

		

	$gracetop=round(($this->gracetop/100.0)*abs($max-$min));

	$gracebottom=round(($this->gracebottom/100.0)*abs($max-$min));

	if( is_numeric($this->autoscale_min) ) {

	    $min = ceil($this->autoscale_min);

	    if( $min >= $max ) {

		JpGraphError::RaiseL(25071);//('You have specified a min value with SetAutoMin() which is larger than the maximum value used for the scale. This is not possible.');

	    }

	}



	if( is_numeric($this->autoscale_max) ) {

	    $max = ceil($this->autoscale_max);

	    if( $min >= $max ) {

		JpGraphError::RaiseL(25072);//('You have specified a max value with SetAutoMax() which is smaller than the miminum value used for the scale. This is not possible.');

	    }

	}



	if( abs($min-$max ) == 0 ) {

	    ++$max;

	    --$min;

	}

			

	$min -= $gracebottom;

	$max += $gracetop;		



	// First get tickmarks as multiples of 1, 10, ...	

	if( $majend ) {

	    list($num1steps,$adj1min,$adj1max,$maj1step) = 

		$this->IntCalcTicks($maxsteps,$min,$max,1);

	}

	else {

	    $adj1min = $min;

	    $adj1max = $max;

	    list($num1steps,$maj1step) = 

		$this->IntCalcTicksFreeze($maxsteps,$min,$max,1);

	}



	if( abs($min-$max) > 2 ) {

	    // Then get tick marks as 2:s 2, 20, ...

	    if( $majend ) {

		list($num2steps,$adj2min,$adj2max,$maj2step) = 

		    $this->IntCalcTicks($maxsteps,$min,$max,5);

	    }

	    else {

		$adj2min = $min;

		$adj2max = $max;

		list($num2steps,$maj2step) = 

		    $this->IntCalcTicksFreeze($maxsteps,$min,$max,5);

	    }

	}

	else {

	    $num2steps = 10000;	// Dummy high value so we don't choose this

	}

	

	if( abs($min-$max) > 5 ) {	

	    // Then get tickmarks as 5:s 5, 50, 500, ...

	    if( $majend ) {

		list($num5steps,$adj5min,$adj5max,$maj5step) = 

		    $this->IntCalcTicks($maxsteps,$min,$max,2);

	    }

	    else {

		$adj5min = $min;

		$adj5max = $max;

		list($num5steps,$maj5step) = 

		    $this->IntCalcTicksFreeze($maxsteps,$min,$max,2);

	    }

	}

	else {

	    $num5steps = 10000;	// Dummy high value so we don't choose this		

	}

	

	// Check to see whichof 1:s, 2:s or 5:s fit better with

	// the requested number of major ticks		

	$match1=abs($num1steps-$maxsteps);		

	$match2=abs($num2steps-$maxsteps);

	if( !empty($maj5step) && $maj5step > 1 )

	    $match5=abs($num5steps-$maxsteps);

	else

	    $match5=10000; 	// Dummy high value 

		

	// Compare these three values and see which is the closest match

	// We use a 0.6 weight to gravitate towards multiple of 5:s 

	if( $match1 < $match2 ) {

	    if( $match1 < $match5 )

		$r=1;			

	    else 

		$r=3;

	}

	else {

	    if( $match2 < $match5 )

		$r=2;			

	    else 

		$r=3;		

	}	

	// Minsteps are always the same as maxsteps for integer scale

	switch( $r ) {

	    case 1:

		$this->ticks->Set($maj1step,$maj1step);

		$this->Update($img,$adj1min,$adj1max);

		break;			

	    case 2:

		$this->ticks->Set($maj2step,$maj2step);

		$this->Update($img,$adj2min,$adj2max);		

		break;									

	    case 3:

		$this->ticks->Set($maj5step,$maj5step);		

		$this->Update($img,$adj5min,$adj5max);

		break;			

	    default:

		JpGraphError::RaiseL(25073,$r);//('Internal error. Integer scale algorithm comparison out of bound (r=$r)');

	}		

    }

	

	

    // Calculate autoscale. Used if user hasn't given a scale and ticks

    // $maxsteps is the maximum number of major tickmarks allowed.

    function AutoScale($img,$min,$max,$maxsteps,$majend=true) {

	if( $this->intscale ) {	

	    $this->IntAutoScale($img,$min,$max,$maxsteps,$majend);

	    return;

	}

	if( abs($min-$max) < 0.00001 ) {

	    // We need some difference to be able to autoscale

	    // make it 5% above and 5% below value

	    if( $min==0 && $max==0 ) {		// Special case

		$min=-1; $max=1;

	    }

	    else {

		$delta = (abs($max)+abs($min))*0.005;

		$min -= $delta;

		$max += $delta;

	    }

	}

		

	$gracetop=($this->gracetop/100.0)*abs($max-$min);

	$gracebottom=($this->gracebottom/100.0)*abs($max-$min);

	if( is_numeric($this->autoscale_min) ) {

	    $min = $this->autoscale_min;

	    if( $min >= $max ) {

		JpGraphError::RaiseL(25071);//('You have specified a min value with SetAutoMin() which is larger than the maximum value used for the scale. This is not possible.');

	    }

	    if( abs($min-$max ) < 0.00001 )

		$max *= 1.2;

	}



	if( is_numeric($this->autoscale_max) ) {

	    $max = $this->autoscale_max;

	    if( $min >= $max ) {

		JpGraphError::RaiseL(25072);//('You have specified a max value with SetAutoMax() which is smaller than the miminum value used for the scale. This is not possible.');

	    }

	    if( abs($min-$max ) < 0.00001 )

		$min *= 0.8;

	}



	$min -= $gracebottom;

	$max += $gracetop;





	// First get tickmarks as multiples of 0.1, 1, 10, ...	

	if( $majend ) {

	    list($num1steps,$adj1min,$adj1max,$min1step,$maj1step) = 

		$this->CalcTicks($maxsteps,$min,$max,1,2);

	}

	else {

	    $adj1min=$min;

	    $adj1max=$max;

	    list($num1steps,$min1step,$maj1step) = 

		$this->CalcTicksFreeze($maxsteps,$min,$max,1,2,false);

	}

		

	// Then get tick marks as 2:s 0.2, 2, 20, ...

	if( $majend ) {

	    list($num2steps,$adj2min,$adj2max,$min2step,$maj2step) = 

		$this->CalcTicks($maxsteps,$min,$max,5,2);

	}

	else {

	    $adj2min=$min;

	    $adj2max=$max;

	    list($num2steps,$min2step,$maj2step) = 

		$this->CalcTicksFreeze($maxsteps,$min,$max,5,2,false);

	}

		

	// Then get tickmarks as 5:s 0.05, 0.5, 5, 50, ...

	if( $majend ) {

	    list($num5steps,$adj5min,$adj5max,$min5step,$maj5step) = 

		$this->CalcTicks($maxsteps,$min,$max,2,5);		

	}

	else {

	    $adj5min=$min;

	    $adj5max=$max;

	    list($num5steps,$min5step,$maj5step) = 

		$this->CalcTicksFreeze($maxsteps,$min,$max,2,5,false);

	}



	// Check to see whichof 1:s, 2:s or 5:s fit better with

	// the requested number of major ticks		

	$match1=abs($num1steps-$maxsteps);		

	$match2=abs($num2steps-$maxsteps);

	$match5=abs($num5steps-$maxsteps);

	// Compare these three values and see which is the closest match

	// We use a 0.8 weight to gravitate towards multiple of 5:s 

	$r=$this->MatchMin3($match1,$match2,$match5,0.8);

	switch( $r ) {

	    case 1:

		$this->Update($img,$adj1min,$adj1max);

		$this->ticks->Set($maj1step,$min1step);

		break;			

	    case 2:

		$this->Update($img,$adj2min,$adj2max);		

		$this->ticks->Set($maj2step,$min2step);

		break;									

	    case 3:

		$this->Update($img,$adj5min,$adj5max);

		$this->ticks->Set($maj5step,$min5step);		

		break;			

	}

    }



//---------------

// PRIVATE METHODS	



    // This method recalculates all constants that are depending on the

    // margins in the image. If the margins in the image are changed

    // this method should be called for every scale that is registred with

    // that image. Should really be installed as an observer of that image.

    function InitConstants($img) {

	if( $this->type=="x" ) {

	    $this->world_abs_size=$img->width - $img->left_margin - $img->right_margin;

	    $this->off=$img->left_margin;

	    $this->scale_factor = 0;

	    if( $this->world_size > 0 )

		$this->scale_factor=$this->world_abs_size/($this->world_size*1.0);

	}

	else { // y scale

	    $this->world_abs_size=$img->height - $img->top_margin - $img->bottom_margin; 

	    $this->off=$img->top_margin+$this->world_abs_size;			

	    $this->scale_factor = 0;			

	    if( $this->world_size > 0 )			

		$this->scale_factor=-$this->world_abs_size/($this->world_size*1.0);	

	}

	$size = $this->world_size * $this->scale_factor;

	$this->scale_abs=array($this->off,$this->off + $size);	

    }

	

    // Initialize the conversion constants for this scale

    // This tries to pre-calculate as much as possible to speed up the

    // actual conversion (with Translate()) later on

    // $start	=scale start in absolute pixels (for x-scale this is an y-position

    //				 and for an y-scale this is an x-position

    // $len 		=absolute length in pixels of scale 			

    function SetConstants($aStart,$aLen) {

	$this->world_abs_size=$aLen;

	$this->off=$aStart;

		

	if( $this->world_size<=0 ) {

	    // This should never ever happen !!

	    JpGraphError::RaiseL(25074);

//("You have unfortunately stumbled upon a bug in JpGraph. It seems like the scale range is ".$this->world_size." [for ".$this->type." scale] <br> Please report Bug #01 to jpgraph@aditus.nu and include the script that gave this error. This problem could potentially be caused by trying to use \"illegal\" values in the input data arrays (like trying to send in strings or only NULL values) which causes the autoscaling to fail.");



	}

		

	// scale_factor = number of pixels per world unit

	$this->scale_factor=$this->world_abs_size/($this->world_size*1.0);

		

	// scale_abs = start and end points of scale in absolute pixels

	$this->scale_abs=array($this->off,$this->off+$this->world_size*$this->scale_factor);		

    }

	

	

    // Calculate number of ticks steps with a specific division

    // $a is the divisor of 10**x to generate the first maj tick intervall

    // $a=1, $b=2 give major ticks with multiple of 10, ...,0.1,1,10,...

    // $a=5, $b=2 give major ticks with multiple of 2:s ...,0.2,2,20,...

    // $a=2, $b=5 give major ticks with multiple of 5:s ...,0.5,5,50,...

    // We return a vector of

    // 	[$numsteps,$adjmin,$adjmax,$minstep,$majstep]

    // If $majend==true then the first and last marks on the axis will be major

    // labeled tick marks otherwise it will be adjusted to the closest min tick mark

    function CalcTicks($maxsteps,$min,$max,$a,$b,$majend=true) {

	$diff=$max-$min; 

	if( $diff==0 )

	    $ld=0;

	else

	    $ld=floor(log10($diff));



	// Gravitate min towards zero if we are close		

	if( $min>0 && $min < pow(10,$ld) ) $min=0;

		

	//$majstep=pow(10,$ld-1)/$a; 

	$majstep=pow(10,$ld)/$a; 

	$minstep=$majstep/$b;

	

	$adjmax=ceil($max/$minstep)*$minstep;

	$adjmin=floor($min/$minstep)*$minstep;	

	$adjdiff = $adjmax-$adjmin;

	$numsteps=$adjdiff/$majstep; 

	

	while( $numsteps>$maxsteps ) {

	    $majstep=pow(10,$ld)/$a; 

	    $numsteps=$adjdiff/$majstep;

	    ++$ld;

	}



	$minstep=$majstep/$b;

	$adjmin=floor($min/$minstep)*$minstep;	

	$adjdiff = $adjmax-$adjmin;		

	if( $majend ) {

	    $adjmin = floor($min/$majstep)*$majstep;	

	    $adjdiff = $adjmax-$adjmin;		

	    $adjmax = ceil($adjdiff/$majstep)*$majstep+$adjmin;

	}

	else

	    $adjmax=ceil($max/$minstep)*$minstep;



	return array($numsteps,$adjmin,$adjmax,$minstep,$majstep);

    }



    function CalcTicksFreeze($maxsteps,$min,$max,$a,$b) {

	// Same as CalcTicks but don't adjust min/max values

	$diff=$max-$min; 

	if( $diff==0 )

	    $ld=0;

	else

	    $ld=floor(log10($diff));



	//$majstep=pow(10,$ld-1)/$a; 

	$majstep=pow(10,$ld)/$a; 

	$minstep=$majstep/$b;

	$numsteps=floor($diff/$majstep); 

	

	while( $numsteps > $maxsteps ) {

	    $majstep=pow(10,$ld)/$a; 

	    $numsteps=floor($diff/$majstep);

	    ++$ld;

	}

	$minstep=$majstep/$b;

	return array($numsteps,$minstep,$majstep);

    }



	

    function IntCalcTicks($maxsteps,$min,$max,$a,$majend=true) {

	$diff=$max-$min; 

	if( $diff==0 )

	    JpGraphError::RaiseL(25075);//('Can\'t automatically determine ticks since min==max.');

	else

	    $ld=floor(log10($diff));

		

	// Gravitate min towards zero if we are close		

	if( $min>0 && $min < pow(10,$ld) ) $min=0;

		

	if( $ld == 0 ) $ld=1;

	

	if( $a == 1 ) 

	    $majstep = 1;

	else

	    $majstep=pow(10,$ld)/$a; 

	$adjmax=ceil($max/$majstep)*$majstep;



	$adjmin=floor($min/$majstep)*$majstep;	

	$adjdiff = $adjmax-$adjmin;

	$numsteps=$adjdiff/$majstep; 

	while( $numsteps>$maxsteps ) {

	    $majstep=pow(10,$ld)/$a; 

	    $numsteps=$adjdiff/$majstep;

	    ++$ld;

	}

		

	$adjmin=floor($min/$majstep)*$majstep;	

	$adjdiff = $adjmax-$adjmin;		

	if( $majend ) {

	    $adjmin = floor($min/$majstep)*$majstep;	

	    $adjdiff = $adjmax-$adjmin;		

	    $adjmax = ceil($adjdiff/$majstep)*$majstep+$adjmin;

	}

	else

	    $adjmax=ceil($max/$majstep)*$majstep;

			

	return array($numsteps,$adjmin,$adjmax,$majstep);		

    }





    function IntCalcTicksFreeze($maxsteps,$min,$max,$a) {

	// Same as IntCalcTick but don't change min/max values

	$diff=$max-$min; 

	if( $diff==0 )

	    JpGraphError::RaiseL(25075);//('Can\'t automatically determine ticks since min==max.');

	else

	    $ld=floor(log10($diff));

		

	if( $ld == 0 ) $ld=1;

	

	if( $a == 1 ) 

	    $majstep = 1;

	else

	    $majstep=pow(10,$ld)/$a; 



	$numsteps=floor($diff/$majstep); 

	while( $numsteps > $maxsteps ) {

	    $majstep=pow(10,$ld)/$a; 

	    $numsteps=floor($diff/$majstep);

	    ++$ld;

	}

					

	return array($numsteps,$majstep);		

    }





	

    // Determine the minimum of three values witha  weight for last value

    function MatchMin3($a,$b,$c,$weight) {

	if( $a < $b ) {

	    if( $a < ($c*$weight) ) 

		return 1; // $a smallest

	    else 

		return 3; // $c smallest

	}

	elseif( $b < ($c*$weight) ) 

	    return 2; // $b smallest

	return 3; // $c smallest

    }

} // Class



//===================================================

// CLASS RGB

// Description: Color definitions as RGB triples

//===================================================

class RGB {

    public $rgb_table; 

    public $img;



    function RGB($aImg=null) {

	$this->img = $aImg;

		

	// Conversion array between color names and RGB

	$this->rgb_table = array(

	    "aqua"=> array(0,255,255),		

	    "lime"=> array(0,255,0),		

	    "teal"=> array(0,128,128),

	    "whitesmoke"=>array(245,245,245),

	    "gainsboro"=>array(220,220,220),

	    "oldlace"=>array(253,245,230),

	    "linen"=>array(250,240,230),

	    "antiquewhite"=>array(250,235,215),

	    "papayawhip"=>array(255,239,213),

	    "blanchedalmond"=>array(255,235,205),

	    "bisque"=>array(255,228,196),

	    "peachpuff"=>array(255,218,185),

	    "navajowhite"=>array(255,222,173),

	    "moccasin"=>array(255,228,181),

	    "cornsilk"=>array(255,248,220),

	    "ivory"=>array(255,255,240),

	    "lemonchiffon"=>array(255,250,205),

	    "seashell"=>array(255,245,238),

	    "mintcream"=>array(245,255,250),

	    "azure"=>array(240,255,255),

	    "aliceblue"=>array(240,248,255),

	    "lavender"=>array(230,230,250),

	    "lavenderblush"=>array(255,240,245),

	    "mistyrose"=>array(255,228,225),

	    "white"=>array(255,255,255),

	    "black"=>array(0,0,0),

	    "darkslategray"=>array(47,79,79),

	    "dimgray"=>array(105,105,105),

	    "slategray"=>array(112,128,144),

	    "lightslategray"=>array(119,136,153),

	    "gray"=>array(190,190,190),

	    "lightgray"=>array(211,211,211),

	    "midnightblue"=>array(25,25,112),

	    "navy"=>array(0,0,128),

	    "cornflowerblue"=>array(100,149,237),

	    "darkslateblue"=>array(72,61,139),

	    "slateblue"=>array(106,90,205),

	    "mediumslateblue"=>array(123,104,238),

	    "lightslateblue"=>array(132,112,255),

	    "mediumblue"=>array(0,0,205),

	    "royalblue"=>array(65,105,225),

	    "blue"=>array(0,0,255),

	    "dodgerblue"=>array(30,144,255),

	    "deepskyblue"=>array(0,191,255),

	    "skyblue"=>array(135,206,235),

	    "lightskyblue"=>array(135,206,250),

	    "steelblue"=>array(70,130,180),

	    "lightred"=>array(211,167,168),

	    "lightsteelblue"=>array(176,196,222),

	    "lightblue"=>array(173,216,230),

	    "powderblue"=>array(176,224,230),

	    "paleturquoise"=>array(175,238,238),

	    "darkturquoise"=>array(0,206,209),

	    "mediumturquoise"=>array(72,209,204),

	    "turquoise"=>array(64,224,208),

	    "cyan"=>array(0,255,255),

	    "lightcyan"=>array(224,255,255),

	    "cadetblue"=>array(95,158,160),

	    "mediumaquamarine"=>array(102,205,170),

	    "aquamarine"=>array(127,255,212),

	    "darkgreen"=>array(0,100,0),

	    "darkolivegreen"=>array(85,107,47),

	    "darkseagreen"=>array(143,188,143),

	    "seagreen"=>array(46,139,87),

	    "mediumseagreen"=>array(60,179,113),

	    "lightseagreen"=>array(32,178,170),

	    "palegreen"=>array(152,251,152),

	    "springgreen"=>array(0,255,127),

	    "lawngreen"=>array(124,252,0),

	    "green"=>array(0,255,0),

	    "chartreuse"=>array(127,255,0),

	    "mediumspringgreen"=>array(0,250,154),

	    "greenyellow"=>array(173,255,47),

	    "limegreen"=>array(50,205,50),

	    "yellowgreen"=>array(154,205,50),

	    "forestgreen"=>array(34,139,34),

	    "olivedrab"=>array(107,142,35),

	    "darkkhaki"=>array(189,183,107),

	    "khaki"=>array(240,230,140),

	    "palegoldenrod"=>array(238,232,170),

	    "lightgoldenrodyellow"=>array(250,250,210),

	    "lightyellow"=>array(255,255,200),

	    "yellow"=>array(255,255,0),

	    "gold"=>array(255,215,0),

	    "lightgoldenrod"=>array(238,221,130),

	    "goldenrod"=>array(218,165,32),

	    "darkgoldenrod"=>array(184,134,11),

	    "rosybrown"=>array(188,143,143),

	    "indianred"=>array(205,92,92),

	    "saddlebrown"=>array(139,69,19),

	    "sienna"=>array(160,82,45),

	    "peru"=>array(205,133,63),

	    "burlywood"=>array(222,184,135),

	    "beige"=>array(245,245,220),

	    "wheat"=>array(245,222,179),

	    "sandybrown"=>array(244,164,96),

	    "tan"=>array(210,180,140),

	    "chocolate"=>array(210,105,30),

	    "firebrick"=>array(178,34,34),

	    "brown"=>array(165,42,42),

	    "darksalmon"=>array(233,150,122),

	    "salmon"=>array(250,128,114),

	    "lightsalmon"=>array(255,160,122),

	    "orange"=>array(255,165,0),

	    "darkorange"=>array(255,140,0),

	    "coral"=>array(255,127,80),

	    "lightcoral"=>array(240,128,128),

	    "tomato"=>array(255,99,71),

	    "orangered"=>array(255,69,0),

	    "red"=>array(255,0,0),

	    "hotpink"=>array(255,105,180),

	    "deeppink"=>array(255,20,147),

	    "pink"=>array(255,192,203),

	    "lightpink"=>array(255,182,193),

	    "palevioletred"=>array(219,112,147),

	    "maroon"=>array(176,48,96),

	    "mediumvioletred"=>array(199,21,133),

	    "violetred"=>array(208,32,144),

	    "magenta"=>array(255,0,255),

	    "violet"=>array(238,130,238),

	    "plum"=>array(221,160,221),

	    "orchid"=>array(218,112,214),

	    "mediumorchid"=>array(186,85,211),

	    "darkorchid"=>array(153,50,204),

	    "darkviolet"=>array(148,0,211),

	    "blueviolet"=>array(138,43,226),

	    "purple"=>array(160,32,240),

	    "mediumpurple"=>array(147,112,219),

	    "thistle"=>array(216,191,216),

	    "snow1"=>array(255,250,250),

	    "snow2"=>array(238,233,233),

	    "snow3"=>array(205,201,201),

	    "snow4"=>array(139,137,137),

	    "seashell1"=>array(255,245,238),

	    "seashell2"=>array(238,229,222),

	    "seashell3"=>array(205,197,191),

	    "seashell4"=>array(139,134,130),

	    "AntiqueWhite1"=>array(255,239,219),

	    "AntiqueWhite2"=>array(238,223,204),

	    "AntiqueWhite3"=>array(205,192,176),

	    "AntiqueWhite4"=>array(139,131,120),

	    "bisque1"=>array(255,228,196),

	    "bisque2"=>array(238,213,183),

	    "bisque3"=>array(205,183,158),

	    "bisque4"=>array(139,125,107),

	    "peachPuff1"=>array(255,218,185),

	    "peachpuff2"=>array(238,203,173),

	    "peachpuff3"=>array(205,175,149),

	    "peachpuff4"=>array(139,119,101),

	    "navajowhite1"=>array(255,222,173),

	    "navajowhite2"=>array(238,207,161),

	    "navajowhite3"=>array(205,179,139),

	    "navajowhite4"=>array(139,121,94),

	    "lemonchiffon1"=>array(255,250,205),

	    "lemonchiffon2"=>array(238,233,191),

	    "lemonchiffon3"=>array(205,201,165),

	    "lemonchiffon4"=>array(139,137,112),

	    "ivory1"=>array(255,255,240),

	    "ivory2"=>array(238,238,224),

	    "ivory3"=>array(205,205,193),

	    "ivory4"=>array(139,139,131),

	    "honeydew"=>array(193,205,193),

	    "lavenderblush1"=>array(255,240,245),

	    "lavenderblush2"=>array(238,224,229),

	    "lavenderblush3"=>array(205,193,197),

	    "lavenderblush4"=>array(139,131,134),

	    "mistyrose1"=>array(255,228,225),

	    "mistyrose2"=>array(238,213,210),

	    "mistyrose3"=>array(205,183,181),

	    "mistyrose4"=>array(139,125,123),

	    "azure1"=>array(240,255,255),

	    "azure2"=>array(224,238,238),

	    "azure3"=>array(193,205,205),

	    "azure4"=>array(131,139,139),

	    "slateblue1"=>array(131,111,255),

	    "slateblue2"=>array(122,103,238),

	    "slateblue3"=>array(105,89,205),

	    "slateblue4"=>array(71,60,139),

	    "royalblue1"=>array(72,118,255),

	    "royalblue2"=>array(67,110,238),

	    "royalblue3"=>array(58,95,205),

	    "royalblue4"=>array(39,64,139),

	    "dodgerblue1"=>array(30,144,255),

	    "dodgerblue2"=>array(28,134,238),

	    "dodgerblue3"=>array(24,116,205),

	    "dodgerblue4"=>array(16,78,139),

	    "steelblue1"=>array(99,184,255),

	    "steelblue2"=>array(92,172,238),

	    "steelblue3"=>array(79,148,205),

	    "steelblue4"=>array(54,100,139),

	    "deepskyblue1"=>array(0,191,255),

	    "deepskyblue2"=>array(0,178,238),

	    "deepskyblue3"=>array(0,154,205),

	    "deepskyblue4"=>array(0,104,139),

	    "skyblue1"=>array(135,206,255),

	    "skyblue2"=>array(126,192,238),

	    "skyblue3"=>array(108,166,205),

	    "skyblue4"=>array(74,112,139),

	    "lightskyblue1"=>array(176,226,255),

	    "lightskyblue2"=>array(164,211,238),

	    "lightskyblue3"=>array(141,182,205),

	    "lightskyblue4"=>array(96,123,139),

	    "slategray1"=>array(198,226,255),

	    "slategray2"=>array(185,211,238),

	    "slategray3"=>array(159,182,205),

	    "slategray4"=>array(108,123,139),

	    "lightsteelblue1"=>array(202,225,255),

	    "lightsteelblue2"=>array(188,210,238),

	    "lightsteelblue3"=>array(162,181,205),

	    "lightsteelblue4"=>array(110,123,139),

	    "lightblue1"=>array(191,239,255),

	    "lightblue2"=>array(178,223,238),

	    "lightblue3"=>array(154,192,205),

	    "lightblue4"=>array(104,131,139),

	    "lightcyan1"=>array(224,255,255),

	    "lightcyan2"=>array(209,238,238),

	    "lightcyan3"=>array(180,205,205),

	    "lightcyan4"=>array(122,139,139),

	    "paleturquoise1"=>array(187,255,255),

	    "paleturquoise2"=>array(174,238,238),

	    "paleturquoise3"=>array(150,205,205),

	    "paleturquoise4"=>array(102,139,139),

	    "cadetblue1"=>array(152,245,255),

	    "cadetblue2"=>array(142,229,238),

	    "cadetblue3"=>array(122,197,205),

	    "cadetblue4"=>array(83,134,139),

	    "turquoise1"=>array(0,245,255),

	    "turquoise2"=>array(0,229,238),

	    "turquoise3"=>array(0,197,205),

	    "turquoise4"=>array(0,134,139),

	    "cyan1"=>array(0,255,255),

	    "cyan2"=>array(0,238,238),

	    "cyan3"=>array(0,205,205),

	    "cyan4"=>array(0,139,139),

	    "darkslategray1"=>array(151,255,255),

	    "darkslategray2"=>array(141,238,238),

	    "darkslategray3"=>array(121,205,205),

	    "darkslategray4"=>array(82,139,139),

	    "aquamarine1"=>array(127,255,212),

	    "aquamarine2"=>array(118,238,198),

	    "aquamarine3"=>array(102,205,170),

	    "aquamarine4"=>array(69,139,116),

	    "darkseagreen1"=>array(193,255,193),

	    "darkseagreen2"=>array(180,238,180),

	    "darkseagreen3"=>array(155,205,155),

	    "darkseagreen4"=>array(105,139,105),

	    "seagreen1"=>array(84,255,159),

	    "seagreen2"=>array(78,238,148),

	    "seagreen3"=>array(67,205,128),

	    "seagreen4"=>array(46,139,87),

	    "palegreen1"=>array(154,255,154),

	    "palegreen2"=>array(144,238,144),

	    "palegreen3"=>array(124,205,124),

	    "palegreen4"=>array(84,139,84),

	    "springgreen1"=>array(0,255,127),

	    "springgreen2"=>array(0,238,118),

	    "springgreen3"=>array(0,205,102),

	    "springgreen4"=>array(0,139,69),

	    "chartreuse1"=>array(127,255,0),

	    "chartreuse2"=>array(118,238,0),

	    "chartreuse3"=>array(102,205,0),

	    "chartreuse4"=>array(69,139,0),

	    "olivedrab1"=>array(192,255,62),

	    "olivedrab2"=>array(179,238,58),

	    "olivedrab3"=>array(154,205,50),

	    "olivedrab4"=>array(105,139,34),

	    "darkolivegreen1"=>array(202,255,112),

	    "darkolivegreen2"=>array(188,238,104),

	    "darkolivegreen3"=>array(162,205,90),

	    "darkolivegreen4"=>array(110,139,61),

	    "khaki1"=>array(255,246,143),

	    "khaki2"=>array(238,230,133),

	    "khaki3"=>array(205,198,115),

	    "khaki4"=>array(139,134,78),

	    "lightgoldenrod1"=>array(255,236,139),

	    "lightgoldenrod2"=>array(238,220,130),

	    "lightgoldenrod3"=>array(205,190,112),

	    "lightgoldenrod4"=>array(139,129,76),

	    "yellow1"=>array(255,255,0),

	    "yellow2"=>array(238,238,0),

	    "yellow3"=>array(205,205,0),

	    "yellow4"=>array(139,139,0),

	    "gold1"=>array(255,215,0),

	    "gold2"=>array(238,201,0),

	    "gold3"=>array(205,173,0),

	    "gold4"=>array(139,117,0),

	    "goldenrod1"=>array(255,193,37),

	    "goldenrod2"=>array(238,180,34),

	    "goldenrod3"=>array(205,155,29),

	    "goldenrod4"=>array(139,105,20),

	    "darkgoldenrod1"=>array(255,185,15),

	    "darkgoldenrod2"=>array(238,173,14),

	    "darkgoldenrod3"=>array(205,149,12),

	    "darkgoldenrod4"=>array(139,101,8),

	    "rosybrown1"=>array(255,193,193),

	    "rosybrown2"=>array(238,180,180),

	    "rosybrown3"=>array(205,155,155),

	    "rosybrown4"=>array(139,105,105),

	    "indianred1"=>array(255,106,106),

	    "indianred2"=>array(238,99,99),

	    "indianred3"=>array(205,85,85),

	    "indianred4"=>array(139,58,58),

	    "sienna1"=>array(255,130,71),

	    "sienna2"=>array(238,121,66),

	    "sienna3"=>array(205,104,57),

	    "sienna4"=>array(139,71,38),

	    "burlywood1"=>array(255,211,155),

	    "burlywood2"=>array(238,197,145),

	    "burlywood3"=>array(205,170,125),

	    "burlywood4"=>array(139,115,85),

	    "wheat1"=>array(255,231,186),

	    "wheat2"=>array(238,216,174),

	    "wheat3"=>array(205,186,150),

	    "wheat4"=>array(139,126,102),

	    "tan1"=>array(255,165,79),

	    "tan2"=>array(238,154,73),

	    "tan3"=>array(205,133,63),

	    "tan4"=>array(139,90,43),

	    "chocolate1"=>array(255,127,36),

	    "chocolate2"=>array(238,118,33),

	    "chocolate3"=>array(205,102,29),

	    "chocolate4"=>array(139,69,19),

	    "firebrick1"=>array(255,48,48),

	    "firebrick2"=>array(238,44,44),

	    "firebrick3"=>array(205,38,38),

	    "firebrick4"=>array(139,26,26),

	    "brown1"=>array(255,64,64),

	    "brown2"=>array(238,59,59),

	    "brown3"=>array(205,51,51),

	    "brown4"=>array(139,35,35),

	    "salmon1"=>array(255,140,105),

	    "salmon2"=>array(238,130,98),

	    "salmon3"=>array(205,112,84),

	    "salmon4"=>array(139,76,57),

	    "lightsalmon1"=>array(255,160,122),

	    "lightsalmon2"=>array(238,149,114),

	    "lightsalmon3"=>array(205,129,98),

	    "lightsalmon4"=>array(139,87,66),

	    "orange1"=>array(255,165,0),

	    "orange2"=>array(238,154,0),

	    "orange3"=>array(205,133,0),

	    "orange4"=>array(139,90,0),

	    "darkorange1"=>array(255,127,0),

	    "darkorange2"=>array(238,118,0),

	    "darkorange3"=>array(205,102,0),

	    "darkorange4"=>array(139,69,0),

	    "coral1"=>array(255,114,86),

	    "coral2"=>array(238,106,80),

	    "coral3"=>array(205,91,69),

	    "coral4"=>array(139,62,47),

	    "tomato1"=>array(255,99,71),

	    "tomato2"=>array(238,92,66),

	    "tomato3"=>array(205,79,57),

	    "tomato4"=>array(139,54,38),

	    "orangered1"=>array(255,69,0),

	    "orangered2"=>array(238,64,0),

	    "orangered3"=>array(205,55,0),

	    "orangered4"=>array(139,37,0),

	    "deeppink1"=>array(255,20,147),

	    "deeppink2"=>array(238,18,137),

	    "deeppink3"=>array(205,16,118),

	    "deeppink4"=>array(139,10,80),

	    "hotpink1"=>array(255,110,180),

	    "hotpink2"=>array(238,106,167),

	    "hotpink3"=>array(205,96,144),

	    "hotpink4"=>array(139,58,98),

	    "pink1"=>array(255,181,197),

	    "pink2"=>array(238,169,184),

	    "pink3"=>array(205,145,158),

	    "pink4"=>array(139,99,108),

	    "lightpink1"=>array(255,174,185),

	    "lightpink2"=>array(238,162,173),

	    "lightpink3"=>array(205,140,149),

	    "lightpink4"=>array(139,95,101),

	    "palevioletred1"=>array(255,130,171),

	    "palevioletred2"=>array(238,121,159),

	    "palevioletred3"=>array(205,104,137),

	    "palevioletred4"=>array(139,71,93),

	    "maroon1"=>array(255,52,179),

	    "maroon2"=>array(238,48,167),

	    "maroon3"=>array(205,41,144),

	    "maroon4"=>array(139,28,98),

	    "violetred1"=>array(255,62,150),

	    "violetred2"=>array(238,58,140),

	    "violetred3"=>array(205,50,120),

	    "violetred4"=>array(139,34,82),

	    "magenta1"=>array(255,0,255),

	    "magenta2"=>array(238,0,238),

	    "magenta3"=>array(205,0,205),

	    "magenta4"=>array(139,0,139),

	    "mediumred"=>array(140,34,34),         

	    "orchid1"=>array(255,131,250),

	    "orchid2"=>array(238,122,233),

	    "orchid3"=>array(205,105,201),

	    "orchid4"=>array(139,71,137),

	    "plum1"=>array(255,187,255),

	    "plum2"=>array(238,174,238),

	    "plum3"=>array(205,150,205),

	    "plum4"=>array(139,102,139),

	    "mediumorchid1"=>array(224,102,255),

	    "mediumorchid2"=>array(209,95,238),

	    "mediumorchid3"=>array(180,82,205),

	    "mediumorchid4"=>array(122,55,139),

	    "darkorchid1"=>array(191,62,255),

	    "darkorchid2"=>array(178,58,238),

	    "darkorchid3"=>array(154,50,205),

	    "darkorchid4"=>array(104,34,139),

	    "purple1"=>array(155,48,255),

	    "purple2"=>array(145,44,238),

	    "purple3"=>array(125,38,205),

	    "purple4"=>array(85,26,139),

	    "mediumpurple1"=>array(171,130,255),

	    "mediumpurple2"=>array(159,121,238),

	    "mediumpurple3"=>array(137,104,205),

	    "mediumpurple4"=>array(93,71,139),

	    "thistle1"=>array(255,225,255),

	    "thistle2"=>array(238,210,238),

	    "thistle3"=>array(205,181,205),

	    "thistle4"=>array(139,123,139),

	    "gray1"=>array(10,10,10),

	    "gray2"=>array(40,40,30),

	    "gray3"=>array(70,70,70),

	    "gray4"=>array(100,100,100),

	    "gray5"=>array(130,130,130),

	    "gray6"=>array(160,160,160),

	    "gray7"=>array(190,190,190),

	    "gray8"=>array(210,210,210),

	    "gray9"=>array(240,240,240),

	    "darkgray"=>array(100,100,100),

	    "darkblue"=>array(0,0,139),

	    "darkcyan"=>array(0,139,139),

	    "darkmagenta"=>array(139,0,139),

	    "darkred"=>array(139,0,0),

	    "silver"=>array(192, 192, 192),

	    "eggplant"=>array(144,176,168),

	    "lightgreen"=>array(144,238,144));		

    }

//----------------

// PUBLIC METHODS

    // Colors can be specified as either

    // 1. #xxxxxx			HTML style

    // 2. "colorname" 	as a named color

    // 3. array(r,g,b)	RGB triple

    // This function translates this to a native RGB format and returns an 

    // RGB triple.

    function Color($aColor) {

	if (is_string($aColor)) {

	    // Strip of any alpha factor

	    $pos = strpos($aColor,'@');

	    if( $pos === false ) {

		$alpha = 0;

	    }

	    else {

		$pos2 = strpos($aColor,':');

		if( $pos2===false ) 

		    $pos2 = $pos-1; // Sentinel

		if( $pos > $pos2 ) {

		    $alpha = str_replace(',','.',substr($aColor,$pos+1));

		    $aColor = substr($aColor,0,$pos);

		}

		else {

		    $alpha = substr($aColor,$pos+1,$pos2-$pos-1);

		    $aColor = substr($aColor,0,$pos).substr($aColor,$pos2);

		}

	    }



	    // Extract potential adjustment figure at end of color

	    // specification

	    $pos = strpos($aColor,":");

	    if( $pos === false ) {

		$adj = 1.0;

	    }

	    else {

		$adj = 0.0 + str_replace(',','.',substr($aColor,$pos+1));

		$aColor = substr($aColor,0,$pos);

	    }

	    if( $adj < 0 )

		JpGraphError::RaiseL(25077);//('Adjustment factor for color must be > 0');



	    if (substr($aColor, 0, 1) == "#") {

		$r = hexdec(substr($aColor, 1, 2));

		$g = hexdec(substr($aColor, 3, 2));

		$b = hexdec(substr($aColor, 5, 2));

	    } else {

      		if(!isset($this->rgb_table[$aColor]) )

		    JpGraphError::RaiseL(25078,$aColor);//(" Unknown color: $aColor");

		$tmp=$this->rgb_table[$aColor];

		$r = $tmp[0];

		$g = $tmp[1];

		$b = $tmp[2];

	    }

	    // Scale adj so that an adj=2 always

	    // makes the color 100% white (i.e. 255,255,255. 

	    // and adj=1 neutral and adj=0 black.

	    if( $adj > 1 ) {

		$m = ($adj-1.0)*(255-min(255,min($r,min($g,$b))));

		return array(min(255,$r+$m), min(255,$g+$m), min(255,$b+$m),$alpha);

	    }

	    elseif( $adj < 1 ) {

		$m = ($adj-1.0)*max(255,max($r,max($g,$b)));

		return array(max(0,$r+$m), max(0,$g+$m), max(0,$b+$m),$alpha);

	    }

	    else {

		return array($r,$g,$b,$alpha);

	    }



	} elseif( is_array($aColor) ) {

	    if( count($aColor)==3 ) {

		$aColor[3]=0;

		return $aColor;

	    }

	    else

		return $aColor;

	}

	else

	    JpGraphError::RaiseL(25079,$aColor,count($aColor));//(" Unknown color specification: $aColor , size=".count($aColor));

    }

	

    // Compare two colors

    // return true if equal

    function Equal($aCol1,$aCol2) {

	$c1 = $this->Color($aCol1);

	$c2 = $this->Color($aCol2);

	if( $c1[0]==$c2[0] && $c1[1]==$c2[1] && $c1[2]==$c2[2] )

	    return true;

	else

	    return false;

    }

	

    // Allocate a new color in the current image

    // Return new color index, -1 if no more colors could be allocated

    function Allocate($aColor,$aAlpha=0.0) {

	list ($r, $g, $b, $a) = $this->color($aColor);

	// If alpha is specified in the color string then this

	// takes precedence over the second argument

	if( $a > 0 )

	    $aAlpha = $a;

	if( $aAlpha < 0 || $aAlpha > 1 ) {

	    JpGraphError::RaiseL(25080);//('Alpha parameter for color must be between 0.0 and 1.0');

	}

	return imagecolorresolvealpha($this->img, $r, $g, $b, round($aAlpha * 127));

    }

} // Class



	

//===================================================

// CLASS Legend

// Description: Responsible for drawing the box containing

// all the legend text for the graph

//===================================================

DEFINE('_DEFAULT_LPM_SIZE',8);

class Legend {

    public $txtcol=array();

    private $color=array(0,0,0); // Default fram color

    private $fill_color=array(235,235,235); // Default fill color

    private $shadow=true; // Shadow around legend "box"

    private $shadow_color='darkgray@0.5';

    private $mark_abs_hsize=_DEFAULT_LPM_SIZE,$mark_abs_vsize=_DEFAULT_LPM_SIZE;

    private $xmargin=10,$ymargin=3,$shadow_width=2;

    private $xlmargin=2, $ylmargin='';

    private $xpos=0.05, $ypos=0.15, $xabspos=-1, $yabspos=-1;

    private $halign="right", $valign="top";

    private $font_family=FF_FONT1,$font_style=FS_NORMAL,$font_size=12;

    private $font_color='black';

    private $hide=false,$layout_n=1;

    private $weight=1,$frameweight=1;

    private $csimareas='';

    private $reverse = false ;

//---------------

// CONSTRUCTOR

    function Legend() {

	// Empty

    }

//---------------

// PUBLIC METHODS	

    function Hide($aHide=true) {

	$this->hide=$aHide;

    }

	

    function SetHColMargin($aXMarg) {

	$this->xmargin = $aXMarg;

    }



    function SetVColMargin($aSpacing) {

	$this->ymargin = $aSpacing ;

    }



    function SetLeftMargin($aXMarg) {

	$this->xlmargin = $aXMarg;

    }





    // Synonym

    function SetLineSpacing($aSpacing) {

	$this->ymargin = $aSpacing ;

    }



    function SetShadow($aShow='gray',$aWidth=2) {

	if( is_string($aShow) ) {

	    $this->shadow_color = $aShow;

	    $this->shadow=true;

	}

	else

	    $this->shadow=$aShow;

	$this->shadow_width=$aWidth;

    }



    function SetMarkAbsSize($aSize) {

	$this->mark_abs_vsize = $aSize ;

	$this->mark_abs_hsize = $aSize ;

    }



    function SetMarkAbsVSize($aSize) {

	$this->mark_abs_vsize = $aSize ;

    }



    function SetMarkAbsHSize($aSize) {

	$this->mark_abs_hsize = $aSize ;

    }



    function SetLineWeight($aWeight) {

	$this->weight = $aWeight;

    }



    function SetFrameWeight($aWeight) {

	$this->frameweight = $aWeight;

    }

	

    function SetLayout($aDirection=LEGEND_VERT) {

	$this->layout_n = $aDirection==LEGEND_VERT ? 1 : 99 ;

    }

	

    function SetColumns($aCols) {

	$this->layout_n = $aCols ;

    }



    function SetReverse($f=true) {

	$this->reverse = $f ;

    }



    // Set color on frame around box

    function SetColor($aFontColor,$aColor='black') {

	$this->font_color=$aFontColor;

	$this->color=$aColor;

    }

	

    function SetFont($aFamily,$aStyle=FS_NORMAL,$aSize=10) {

	$this->font_family = $aFamily;

	$this->font_style = $aStyle;

	$this->font_size = $aSize;

    }

	

    function SetPos($aX,$aY,$aHAlign="right",$aVAlign="top") {

	$this->Pos($aX,$aY,$aHAlign,$aVAlign);

    }



    function SetAbsPos($aX,$aY,$aHAlign="right",$aVAlign="top") {

	$this->xabspos=$aX;

	$this->yabspos=$aY;

	$this->halign=$aHAlign;

	$this->valign=$aVAlign;

    }





    function Pos($aX,$aY,$aHAlign="right",$aVAlign="top") {

	if( !($aX<1 && $aY<1) )

	    JpGraphError::RaiseL(25120);//(" Position for legend must be given as percentage in range 0-1");

	$this->xpos=$aX;

	$this->ypos=$aY;

	$this->halign=$aHAlign;

	$this->valign=$aVAlign;

    }



    function SetFillColor($aColor) {

	$this->fill_color=$aColor;

    }

	

    function Add($aTxt,$aColor,$aPlotmark='',$aLinestyle=0,$csimtarget='',$csimalt='',$csimwintarget='') {

	$this->txtcol[]=array($aTxt,$aColor,$aPlotmark,$aLinestyle,$csimtarget,$csimalt,$csimwintarget);

    }



    function GetCSIMAreas() {

	return $this->csimareas;

    }

	

    function Stroke(&$aImg) {

	// Constant

	$fillBoxFrameWeight=1;



	if( $this->hide ) return;



	$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);		



	if( $this->reverse ) {

	    $this->txtcol = array_reverse($this->txtcol);

	}



	$n=count($this->txtcol);

	if( $n == 0 ) return;



	// Find out the max width and height of each column to be able

        // to size the legend box.

	$numcolumns = ($n > $this->layout_n ? $this->layout_n : $n);

	for( $i=0; $i < $numcolumns; ++$i ) {

	    $colwidth[$i] = $aImg->GetTextWidth($this->txtcol[$i][0]) +

		            2*$this->xmargin + 2*$this->mark_abs_hsize;

	    $colheight[$i] = 0;

	}



	// Find our maximum height in each row

	$rows = 0 ; $rowheight[0] = 0;

	for( $i=0; $i < $n; ++$i ) {

	    $h = max($this->mark_abs_vsize,$aImg->GetTextHeight($this->txtcol[$i][0]))+$this->ymargin;

	    if( $i % $numcolumns == 0 ) {

		$rows++;

		$rowheight[$rows-1] = 0;

	    }

	    $rowheight[$rows-1] = max($rowheight[$rows-1],$h);

	}



	$abs_height = 0;

	for( $i=0; $i < $rows; ++$i ) {

	    $abs_height += $rowheight[$i] ;

	}



	// Make sure that the height is at least as high as mark size + ymargin

	$abs_height = max($abs_height,$this->mark_abs_vsize);



	// We add 3 extra pixels height to compensate for the difficult in

	// calculating font height

	$abs_height += $this->ymargin+3; 

						

	// Find out the maximum width in each column

	for( $i=$numcolumns; $i < $n; ++$i ) {

	    $colwidth[$i % $numcolumns] = max(

		$aImg->GetTextWidth($this->txtcol[$i][0])+2*$this->xmargin+2*$this->mark_abs_hsize,$colwidth[$i % $numcolumns]);

	}



	// Get the total width

	$mtw = 0;

	for( $i=0; $i < $numcolumns; ++$i ) {

	    $mtw += $colwidth[$i] ;

	}



	// Find out maximum width we need for legend box

	$abs_width = $mtw+$this->xlmargin;



	if( $this->xabspos === -1  && $this->yabspos === -1 ) {

	    $this->xabspos = $this->xpos*$aImg->width ;

	    $this->yabspos = $this->ypos*$aImg->height ;

	}



	// Positioning of the legend box

	if( $this->halign == 'left' )

	    $xp = $this->xabspos; 

	elseif( $this->halign == 'center' )

	    $xp = $this->xabspos - $abs_width/2; 

	else  

	    $xp = $aImg->width - $this->xabspos - $abs_width;



	$yp=$this->yabspos;

	if( $this->valign == 'center' )

	    $yp-=$abs_height/2;

	elseif( $this->valign == 'bottom' )

	    $yp-=$abs_height;

			

	// Stroke legend box

	$aImg->SetColor($this->color);	

	$aImg->SetLineWeight($this->frameweight);

	$aImg->SetLineStyle('solid');



	if( $this->shadow )

	    $aImg->ShadowRectangle($xp,$yp,$xp+$abs_width+$this->shadow_width,

				   $yp+$abs_height+$this->shadow_width,

				   $this->fill_color,$this->shadow_width,$this->shadow_color);

	else {

	    $aImg->SetColor($this->fill_color);				

	    $aImg->FilledRectangle($xp,$yp,$xp+$abs_width,$yp+$abs_height);

	    $aImg->SetColor($this->color);							

	    $aImg->Rectangle($xp,$yp,$xp+$abs_width,$yp+$abs_height);

	}



	// x1,y1 is the position for the legend mark

	$x1=$xp+$this->mark_abs_hsize+$this->xlmargin;

	$y1=$yp + $this->ymargin;		

	

	$f2 =  round($aImg->GetTextHeight('X')/2);



	$grad = new Gradient($aImg);

	$patternFactory = null;



	// Now stroke each legend in turn

	// Each plot has added the following information to  the legend

	// p[0] = Legend text

	// p[1] = Color, 

	// p[2] = For markers a reference to the PlotMark object

	// p[3] = For lines the line style, for gradient the negative gradient style

	// p[4] = CSIM target

	// p[5] = CSIM Alt text

	$i = 1 ; $row = 0;

	foreach($this->txtcol as $p) {

	 

	    // STROKE DEBUG BOX

	    if( _JPG_DEBUG ) {

	        $aImg->SetLineWeight(1);

	        $aImg->SetColor('red');

	        $aImg->SetLineStyle('solid');

	        $aImg->Rectangle($xp,$y1,$xp+$abs_width,$y1+$rowheight[$row]);

	    }



	    $aImg->SetLineWeight($this->weight);

	    $x1 = round($x1); $y1=round($y1);

	    if ( !empty($p[2]) && $p[2]->GetType() > -1 ) {

		// Make a plot mark legend

		$aImg->SetColor($p[1]);

		if( is_string($p[3]) || $p[3]>0 ) {

		    $aImg->SetLineStyle($p[3]);

		    $aImg->StyleLine($x1-$this->mark_abs_hsize,$y1+$f2,$x1+$this->mark_abs_hsize,$y1+$f2);

		}

		// Stroke a mark with the standard size

		// (As long as it is not an image mark )

		if( $p[2]->GetType() != MARK_IMG ) {



		    // Clear any user callbacks since we ont want them called for

		    // the legend marks

		    $p[2]->iFormatCallback = '';

		    $p[2]->iFormatCallback2 = '';



		    // Since size for circles is specified as the radius

		    // this means that we must half the size to make the total

		    // width behave as the other marks

		    if( $p[2]->GetType() == MARK_FILLEDCIRCLE || $p[2]->GetType() == MARK_CIRCLE ) {

		        $p[2]->SetSize(min($this->mark_abs_vsize,$this->mark_abs_hsize)/2);

			$p[2]->Stroke($aImg,$x1,$y1+$f2);

		    }

		    else {

		        $p[2]->SetSize(min($this->mark_abs_vsize,$this->mark_abs_hsize));

			$p[2]->Stroke($aImg,$x1,$y1+$f2);

		    }

		}

	    } 

	    elseif ( !empty($p[2]) && (is_string($p[3]) || $p[3]>0 ) ) {

		// Draw a styled line

		$aImg->SetColor($p[1]);

		$aImg->SetLineStyle($p[3]);

		$aImg->StyleLine($x1-1,$y1+$f2,$x1+$this->mark_abs_hsize,$y1+$f2);

		$aImg->StyleLine($x1-1,$y1+$f2+1,$x1+$this->mark_abs_hsize,$y1+$f2+1);

	    } 

	    else {

		// Draw a colored box

		$color = $p[1] ;

		// We make boxes slightly larger to better show

		$boxsize = min($this->mark_abs_vsize,$this->mark_abs_hsize) + 2 ;

		$ym =  round($y1 + $f2 - $boxsize/2);

		// We either need to plot a gradient or a 

		// pattern. To differentiate we use a kludge.

		// Patterns have a p[3] value of < -100

		if( $p[3] < -100 ) { 

		    // p[1][0] == iPattern, p[1][1] == iPatternColor, p[1][2] == iPatternDensity

		    if( $patternFactory == null ) {

			$patternFactory = new RectPatternFactory();

		    }		    

		    $prect = $patternFactory->Create($p[1][0],$p[1][1],1);

		    $prect->SetBackground($p[1][3]);

		    $prect->SetDensity($p[1][2]+1);

		    $prect->SetPos(new Rectangle($x1,$ym,$boxsize,$boxsize));

		    $prect->Stroke($aImg);

		    $prect=null;

		}

		else {

		    if( is_array($color) && count($color)==2 ) {

			// The client want a gradient color

			$grad->FilledRectangle($x1,$ym,

					       $x1+$boxsize,$ym+$boxsize,

					       $color[0],$color[1],-$p[3]);

		    }

		    else {

			$aImg->SetColor($p[1]);

			$aImg->FilledRectangle($x1,$ym,$x1+$boxsize,$ym+$boxsize);

		    }

		    $aImg->SetColor($this->color);

		    $aImg->SetLineWeight($fillBoxFrameWeight);

		    $aImg->Rectangle($x1,$ym,$x1+$boxsize,$ym+$boxsize);

		}

	    }

	    $aImg->SetColor($this->font_color);

	    $aImg->SetFont($this->font_family,$this->font_style,$this->font_size);		

	    $aImg->SetTextAlign("left","top");			

	    $aImg->StrokeText(round($x1+$this->mark_abs_hsize+$this->xmargin),$y1,$p[0]);



	    // Add CSIM for Legend if defined

	    if( !empty($p[4]) ) {

		

		$xe = $x1 + $this->xmargin+$this->mark_abs_hsize+$aImg->GetTextWidth($p[0]);

		$ye = $y1 + max($this->mark_abs_vsize,$aImg->GetTextHeight($p[0]));

		$coords = "$x1,$y1,$xe,$y1,$xe,$ye,$x1,$ye";

		if( ! empty($p[4]) ) {

		    $this->csimareas .= "<area shape=\"poly\" coords=\"$coords\" href=\"".htmlentities($p[4])."\"";



		    if( !empty($p[6]) ) {

			$this->csimareas .= " target=\"".$p[6]."\"";

		    }



		    if( !empty($p[5]) ) {

			$tmp=sprintf($p[5],$p[0]);

			$this->csimareas .= " title=\"$tmp\" alt=\"$tmp\" ";

		    }

		    $this->csimareas .= " />\n";

		}

	    }

	    if( $i >= $this->layout_n ) {

		$x1 = $xp+$this->mark_abs_hsize+$this->xlmargin;

		$y1 += $rowheight[$row++];

		$i = 1;

	    }

	    else {

		$x1 += $colwidth[($i-1) % $numcolumns] ;

		++$i;

	    }

	}	

    }

} // Class

	



//===================================================

// CLASS DisplayValue

// Description: Used to print data values at data points

//===================================================

class DisplayValue {

    public $margin=5;

    public $show=false;

    public $valign="",$halign="center";

    public $format="%.1f",$negformat="";

    private $ff=FF_FONT1,$fs=FS_NORMAL,$fsize=10;

    private $iFormCallback='';

    private $angle=0;

    private $color="navy",$negcolor="";

    private $iHideZero=false;



    function Show($aFlag=true) {

	$this->show=$aFlag;

    }



    function SetColor($aColor,$aNegcolor="") {

	$this->color = $aColor;

	$this->negcolor = $aNegcolor;

    }



    function SetFont($aFontFamily,$aFontStyle=FS_NORMAL,$aFontSize=10) {

	$this->ff=$aFontFamily;

	$this->fs=$aFontStyle;

	$this->fsize=$aFontSize;

    }



    function ApplyFont($aImg) {

	$aImg->SetFont($this->ff,$this->fs,$this->fsize);

    }



    function SetMargin($aMargin) {

	$this->margin = $aMargin;

    }



    function SetAngle($aAngle) {

	$this->angle = $aAngle;

    }



    function SetAlign($aHAlign,$aVAlign='') {

	$this->halign = $aHAlign;

	$this->valign = $aVAlign;

    }



    function SetFormat($aFormat,$aNegFormat="") {

	$this->format= $aFormat;

	$this->negformat= $aNegFormat;

    }



    function SetFormatCallback($aFunc) {

	$this->iFormCallback = $aFunc;

    }



    function HideZero($aFlag=true) {

	$this->iHideZero=$aFlag;

    }



    function Stroke($img,$aVal,$x,$y) {

	

	if( $this->show ) 

	{

	    if( $this->negformat=="" ) $this->negformat=$this->format;

	    if( $this->negcolor=="" ) $this->negcolor=$this->color;



	    if( $aVal===NULL || (is_string($aVal) && ($aVal=="" || $aVal=="-" || $aVal=="x" ) ) ) 

		return;



	    if( is_numeric($aVal) && $aVal==0 && $this->iHideZero ) {

		return;

	    }



	    // Since the value is used in different cirumstances we need to check what

	    // kind of formatting we shall use. For example, to display values in a line

	    // graph we simply display the formatted value, but in the case where the user

	    // has already specified a text string we don't fo anything.

	    if( $this->iFormCallback != '' ) {

		$f = $this->iFormCallback;

		$sval = call_user_func($f,$aVal);

	    }

	    elseif( is_numeric($aVal) ) {

		if( $aVal >= 0 )

		    $sval=sprintf($this->format,$aVal);

		else

		    $sval=sprintf($this->negformat,$aVal);

	    }

	    else

		$sval=$aVal;



	    $y = $y-sign($aVal)*$this->margin;



	    $txt = new Text($sval,$x,$y);

	    $txt->SetFont($this->ff,$this->fs,$this->fsize);

	    if( $this->valign == "" ) {

		if( $aVal >= 0 )

		    $valign = "bottom";

		else

		    $valign = "top";

	    }

	    else

		$valign = $this->valign;

	    $txt->Align($this->halign,$valign);



	    $txt->SetOrientation($this->angle);

	    if( $aVal > 0 )

		$txt->SetColor($this->color);

	    else

		$txt->SetColor($this->negcolor);

	    $txt->Stroke($img);

	}

    }

}



//===================================================

// CLASS Plot

// Description: Abstract base class for all concrete plot classes

//===================================================

class Plot {

    public $numpoints=0;

    public $value;

    public $legend='';

    public $coords=array();

    public $color="black";

    public $hidelegend=false;

    public $line_weight=1;

    public $csimtargets=array(),$csimwintargets=array(); // Array of targets for CSIM

    public $csimareas="";			// Resultant CSIM area tags	

    public $csimalts=null;			// ALT:s for corresponding target

    public $legendcsimtarget='',$legendcsimwintarget='';

    public $legendcsimalt='';

    protected $weight=1;	

    protected $center=false;

//---------------

// CONSTRUCTOR

    function Plot($aDatay,$aDatax=false) {

	$this->numpoints = count($aDatay);

	if( $this->numpoints==0 )

	    JpGraphError::RaiseL(25121);//("Empty input data array specified for plot. Must have at least one data point.");

	$this->coords[0]=$aDatay;

	if( is_array($aDatax) ) {

	    $this->coords[1]=$aDatax;

	    $n = count($aDatax);

	    for($i=0; $i < $n; ++$i ) {

		if( !is_numeric($aDatax[$i]) ) {

		    JpGraphError::RaiseL(25070);

		}

	    }

	}

	$this->value = new DisplayValue();

    }



//---------------

// PUBLIC METHODS	



    // Stroke the plot

    // "virtual" function which must be implemented by

    // the subclasses

    function Stroke($aImg,$aXScale,$aYScale) {

	JpGraphError::RaiseL(25122);//("JpGraph: Stroke() must be implemented by concrete subclass to class Plot");

    }



    function HideLegend($f=true) {

	$this->hidelegend = $f;

    }



    function DoLegend($graph) {

	if( !$this->hidelegend )

	    $this->Legend($graph);

    }



    function StrokeDataValue($img,$aVal,$x,$y) {

	$this->value->Stroke($img,$aVal,$x,$y);

    }

	

    // Set href targets for CSIM	

    function SetCSIMTargets($aTargets,$aAlts='',$aWinTargets='') {

	$this->csimtargets=$aTargets;

	$this->csimwintargets=$aWinTargets;

	$this->csimalts=$aAlts;		

    }

 	

    // Get all created areas

    function GetCSIMareas() {

	return $this->csimareas;

    }	

	

    // "Virtual" function which gets called before any scale

    // or axis are stroked used to do any plot specific adjustment

    function PreStrokeAdjust($aGraph) {

	if( substr($aGraph->axtype,0,4) == "text" && (isset($this->coords[1])) )

	    JpGraphError::RaiseL(25123);//("JpGraph: You can't use a text X-scale with specified X-coords. Use a \"int\" or \"lin\" scale instead.");

	return true;	

    }

	

    // Get minimum values in plot

    function Min() {

	if( isset($this->coords[1]) )

	    $x=$this->coords[1];

	else

	    $x="";

	if( $x != "" && count($x) > 0 ) {

	    $xm=min($x);

	}

	else 

	    $xm=0;

	$y=$this->coords[0];

	$cnt = count($y);

	if( $cnt > 0 ) {

	    /*

	    if( ! isset($y[0]) ) {

		JpGraphError('The input data array must have consecutive values from position 0 and forward. The given y-array starts with empty values (NULL)');

	    }

	    $ym = $y[0];

	    */

	    $i=0;

	    while( $i<$cnt && !is_numeric($ym=$y[$i]) )

		$i++;

	    while( $i < $cnt) {

		if( is_numeric($y[$i]) ) 

		    $ym=min($ym,$y[$i]);

		++$i;

	    }			

	}

	else 

	    $ym="";

	return array($xm,$ym);

    }

	

    // Get maximum value in plot

    function Max() {

	if( isset($this->coords[1]) )

	    $x=$this->coords[1];

	else

	    $x="";



	if( $x!="" && count($x) > 0 )

	    $xm=max($x);

	else {

	    $xm = $this->numpoints-1;

	}

	$y=$this->coords[0];

	if( count($y) > 0 ) {

	    /*

	    if( !isset($y[0]) ) {

		JpGraphError::Raise('The input data array must have consecutive values from position 0 and forward. The given y-array starts with empty values (NULL)');

//		$y[0] = 0;

// Change in 1.5.1 Don't treat this as an error any more. Just silently convert to 0

// Change in 1.17 Treat his as an error again !! This is the right way to do !!

	    }

	    */

	    $cnt = count($y);

	    $i=0;

	    while( $i<$cnt && !is_numeric($ym=$y[$i]) )

		$i++;				

	    while( $i < $cnt ) {

		if( is_numeric($y[$i]) ) 

		    $ym=max($ym,$y[$i]);

		++$i;

	    }

	}

	else 

	    $ym="";

	return array($xm,$ym);

    }

	

    function SetColor($aColor) {

	$this->color=$aColor;

    }

	

    function SetLegend($aLegend,$aCSIM='',$aCSIMAlt='',$aCSIMWinTarget='') {

	$this->legend = $aLegend;

	$this->legendcsimtarget = $aCSIM;

	$this->legendcsimwintarget = $aCSIMWinTarget;

	$this->legendcsimalt = $aCSIMAlt;

    }



    function SetWeight($aWeight) {

	$this->weight=$aWeight;

    }

		

    function SetLineWeight($aWeight=1) {

	$this->line_weight=$aWeight;

    }

	

    function SetCenter($aCenter=true) {

	$this->center = $aCenter;

    }

	

    // This method gets called by Graph class to plot anything that should go

    // into the margin after the margin color has been set.

    function StrokeMargin($aImg) {

	return true;

    }



    // Framework function the chance for each plot class to set a legend

    function Legend($aGraph) {

	if( $this->legend != "" )

	    $aGraph->legend->Add($this->legend,$this->color,"",0,$this->legendcsimtarget,

				 $this->legendcsimalt,$this->legendcsimwintarget);    

    }

	

} // Class





//===================================================

// CLASS PlotLine

// Description: 

// Data container class to hold properties for a static

// line that is drawn directly in the plot area.

// Usefull to add static borders inside a plot to show

// for example set-values

//===================================================

class PlotLine {

    public $scaleposition, $direction=-1; 

    protected $weight=1;

    protected $color="black";

    private $legend='',$hidelegend=false, $legendcsimtarget='', $legendcsimalt='',$legendcsimwintarget='';

    private $iLineStyle='solid';



//---------------

// CONSTRUCTOR

    function PlotLine($aDir=HORIZONTAL,$aPos=0,$aColor="black",$aWeight=1) {

	$this->direction = $aDir;

	$this->color=$aColor;

	$this->weight=$aWeight;

	$this->scaleposition=$aPos;

    }

	

//---------------

// PUBLIC METHODS	



    function SetLegend($aLegend,$aCSIM='',$aCSIMAlt='',$aCSIMWinTarget='') {

	$this->legend = $aLegend;

	$this->legendcsimtarget = $aCSIM;

	$this->legendcsimwintarget = $aCSIMWinTarget;

	$this->legendcsimalt = $aCSIMAlt;

    }



    function HideLegend($f=true) {

	$this->hidelegend = $f;

    }



    function SetPosition($aScalePosition) {

	$this->scaleposition=$aScalePosition;

    }

	

    function SetDirection($aDir) {

	$this->direction = $aDir;

    }

	

    function SetColor($aColor) {

	$this->color=$aColor;

    }

	

    function SetWeight($aWeight) {

	$this->weight=$aWeight;

    }



    function SetLineStyle($aStyle) {

	$this->iLineStyle = $aStyle;

    }



//---------------

// PRIVATE METHODS



    function DoLegend(&$graph) {

	if( !$this->hidelegend )

	    $this->Legend($graph);

    }



    // Framework function the chance for each plot class to set a legend

    function Legend(&$aGraph) {

	if( $this->legend != "" ) {

	    $dummyPlotMark = new PlotMark();

	    $lineStyle = 1;

	    $aGraph->legend->Add($this->legend,$this->color,$dummyPlotMark,$lineStyle,

				 $this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);    

	}

    }



    function PreStrokeAdjust($aGraph) {

	// Nothing to do

    }

	

    function Stroke($aImg,$aXScale,$aYScale) {

	$aImg->SetColor($this->color);

	$aImg->SetLineWeight($this->weight);	

	$oldStyle = $aImg->SetLineStyle($this->iLineStyle);

	if( $this->direction == VERTICAL ) {

	    $ymin_abs=$aYScale->Translate($aYScale->GetMinVal());

	    $ymax_abs=$aYScale->Translate($aYScale->GetMaxVal());

	    $xpos_abs=$aXScale->Translate($this->scaleposition);

	    $aImg->StyleLine($xpos_abs, $ymin_abs, $xpos_abs, $ymax_abs);

	}

	elseif( $this->direction == HORIZONTAL ) {

	    $xmin_abs=$aXScale->Translate($aXScale->GetMinVal());

	    $xmax_abs=$aXScale->Translate($aXScale->GetMaxVal());

	    $ypos_abs=$aYScale->Translate($this->scaleposition);

	    $aImg->StyleLine($xmin_abs, $ypos_abs, $xmax_abs, $ypos_abs);

	}

	else {

	    JpGraphError::RaiseL(25125);//(" Illegal direction for static line");

	}

	$aImg->SetLineStyle($oldStyle);

    }

}



// <EOF>

?>