/www/advgraph/advgraph4.class.php

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<?php

/*

 +-------------------------------------------------------------------------+

 | Copyright (C) 2006-2007 Zack Bloom                                      |

 |                                                                         |

 | This program is free software; you can redistribute it and/or           |

 | modify it under the terms of the GNU Lesser General Public              |

 | License as published by the Free Software Foundation; either            |

 | version 2.1 of the License, or (at your option) any later version. 	   |

 |                                                                         |

 | This program is distributed in the hope that it will be useful,         |

 | but WITHOUT ANY WARRANTY; without even the implied warranty of          |

 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           |

 | GNU Lesser General Public License for more details.                     |

 |                                                                         |

 | You should have received a copy of the GNU Lesser General Public        |

 | License along with this library; if not, write to the Free Software     |

 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA           |

 | 02110-1301, USA                                                         |

 |                                                                         |

 +-------------------------------------------------------------------------+

 | Version 1.8.0 - April 7th, 2007                                         |

 +-------------------------------------------------------------------------+

 | Special Thanks to:                                                      |

 |   Miles Kaufmann - EvalMath Class Library                               |

 |   Walter Zorn    - Javascript Graph Library                             |

 |   Andreas Gorh   - PHP4 Backport                                        |

 |   All Those Who Love PHP :)                                             |

 +-------------------------------------------------------------------------+

 | Code updates and additional features are released frequently, the most  |

 | updated version can always be found at: http://www.zackbloom.org.       |

 |                                                                         |

 | Email me at: zackbloom@gmail.com with any comments, questions and bugs  |

 |                                                                         |

 | Works with PHP5 with GD and TTF support.                                |

 +-------------------------------------------------------------------------+

 | - Advanced Graph Class Library - http://www.zackbloom.org/              |

 +-------------------------------------------------------------------------+

*/



global $numGraphs;



class graph {

	var $width, $height, $numPoints, $xPts, $yPts, $iVars, $dVars, $ids, $props, $time, $xMax, $yMax, $xMin, $yMin;



	var $img, $imgCache, $fileCache, $imgCacheFile, $lines, $errors, $div, $evalmath, $mode;



	var $constructed;



	var $font_name, $keyfont_name;



	function graph($x_width = 400, $x_height = 200, $xScale = 10, $yScale = 6, $mode = 'image', $div = 'jg') {

		global $numGraphs;



		if ($this->constructed !== true) {

			/* set defaults */

			$this->props    = array();

			$this->xPts     = array();

			$this->yPts     = array();

			$this->iVars[0] = array();

			$this->dVars[0] = array();

			$this->errors   = array();

			$this->width    = $x_width;

			$this->height   = $x_height;



			$this->numPoints[0] = 0;



			$this->xMax  = 1;

			$this->yMax  = 1;

			$this->xMin  = 0;

			$this->yMin  = 0;



			$this->lines = 1;



			$this->mode         = $mode;

			$this->font_name    = "arial.ttf";

			$this->keyfont_name = "arial.ttf";



			$this->setProp('font',    dirname(__FILE__) . "/" . $this->font_name);

			$this->setProp('keyfont', dirname(__FILE__) . "/" . $this->keyfont_name);



			if ($this->mode=='div') {

				$this->div = new jgwrap($div, str_replace(".ttf", "", str_replace("fonts/", "", $this->font_name)), $numGraphs);

			}



			$this->evalmath = new EvalMath;



			$this->setBulkProps("xsclpts:$xScale, ysclpts:$yScale, xsclpts:10, ysclpts:6, xsclmax:1, xsclmin:0,

				ysclmax:1, ysclmin:0, xSclInc:1, ySclInc:.165, sclline:5, onfreq:.2, actwidth:".($x_width+30).",

				actheight:".($x_height+30).", xincpts:10, yincpts:6, autoscl:true");



			$this->setProp("color", array(0,0,255,0));

			$this->setProp("backcolor", array(255,255,255));



			$this->img = imagecreatetruecolor($this->width,$this->height);



			/* register the destructor */

			register_shutdown_function(array($this,'__destruct'));



			$this->constructed = true;

		} else {

			$this->internalGraph();

		}

	}



	/* remove cached images if the cache is disabled */

	function __destruct() {

		if (isset($this->fileCache) && !$this->getProp("keepcache",true)) {

			unlink($this->fileCache);

		}



		if (isset($this->imgCache) && !$this->getProp("keepcache",true)) {

			unlink($this->imgCache);

		}



		unset($numGraphs);

	}



	function setProp($name,$value,$l=-1) {

		if ($l+1 > $this->lines) $this->lines++;



		$this->props[$l][strtolower($this->strim($name))] = $this->strim($value);

	}



	function __set($name,$value) {

		$this->setProp($name,$value);

	}



	function storeGraph($file="graphCache.data", $image=false) {

		$this->fileCache = $file;



		if ($image) {

			$this->imgCacheFile = $image;

			ob_start();

			imagepng($this->img);

			unset($this->img);

			$img = ob_get_flush();

			file_put_contents($image,$img);

		}



		file_put_contents($file,serialize($this));



		if ($image)

			return array($file, $image);

		else

			return $file;

	}



	function retriveGraph($file="graphCache.data"){

		return unserialize(file_get_contents($file));

	}



	function retriveImage($image){

		$this->img = imagecreatefrompng($image);

	}



	function setBulkProps($str) {

		if ($str=="") return false;



		if (func_num_args() == 1) {

			$str = str_replace(

					array(":red", ":green", ":blue", ":orange", ":yellow", ":pink", ":purple", ":teal", ":black", ":white", ":lightgray", ":darkgray"),

					array(":230-60-60", ":100-200-100", ":60-60-230", ":255-160-15", ":255-255-0", ":255-0-170", ":216-0-255", ":0-255-255", ":0-0-0", ":255-255-255", ":150-150-150", ":80-80-80"),

					$str);



			foreach (explode(",",$str) as $e) {

				$d = explode(":",$e);



				if (strpos($d[0],"|")){

					$g = explode("|",$d[0]);

					$d[0] = $g[1];

					$d[2] = $g[0];

				} else {

					$d[2] = -1;

				}



				if (strpos($d[0],"color")!==false) {

					$d[1] = explode("-",$d[1]);

				}



				$this->setProp($d[0],$d[1],$d[2]);

			}

		} else {

			$arg = func_get_args();



			foreach ($arg as $e) {

				if (is_string($e)) {

					$e = explode(":",$e);



					if (strpos("|",$e[0])) {

						$g = explode("|",$e[0]);

						$e[0] = $e[1];

						$e[2] = $e[0];

					} else {

						$e[2] = -1;

					}

				} else {

					if (isset($e[2])==false) {

						$e[2] = -1;

					}

				}



				$this->setProp($e[0],$e[1],$e[2]);

			}

		}

		return true;

	}



	function strim($a) {

		if (is_string($a)) {

			return trim($a);

		} else {

			return $a;

		}

	}



	function storePropArr($arr) {

		$this->props = $arr;

	}



	function getPropArr() {

		return $this->props;

	}



	/* getProp - retrieves the values from the properties array.  Otherwise

	             returns the default value.

	   @arg $name - the property name to be searched

	   @arg $asu  - the default value if not found

	   @arg $l    - the property name array offset */

	function getProp($name, $asu = false, $l=0) {

		$name = strtolower($this->strim($name));



		if (isset($this->props[$l][$name])) {

			return $this->props[$l][$name];

		} else {

			if (isset($this->props[-1][$name])) {

				return $this->props[-1][$name];

			} else {

				if ($asu===-9) {

					$this->error('The required property '.$name.' was not set');

				}elseif ($asu===-8) {

					$this->error('The property '.$name.' was not found');

				}elseif (isset($this->$name)) {

					return $this->$name;

				} else {

					return $this->strim($asu);

				}

			}

		}



		return false;

	}



	function __get($name) {

		return $this->getProp($name,-8);

	}



	function __call($name, $args) {

		if (count($args)!=2) {

			$this->error("Method $name not found.",true);

		}



		return $this->getProp($name, $args[0], $args[1]);

	}



	function setColor($obj, $l, $r, $g=-1, $b=-1, $a=0) {

		if (substr($obj,-5)!="color") {

			$obj.="color";

		}



		if (is_string($r) && $g==-1 && $b==-1) {

			$colors = array("red","green","blue","orange","yellow","pink","purple","teal","black","white","lightgray","darkgray");

			$cid = array(array(230,60,60),array(100,200,100),array(60,60,230),array(255,160,15),array(255,255,0),array(255,0,170),array(216,0,255),array(0,255,255),array(0,0,0),array(255,255,255),array(150,150,150),array(80,80,80));

			$x=array_search(strtolower($r),$colors);



			if ($x!==false) {

				$this->setColor($obj,$l,$cid[$x][0],$cid[$x][1],$cid[$x][2],0);

			} else {

				$this->error("Color not found");

			}

		} else {

			$this->setProp($obj,array($r,$g,$b,$a),$l);

		}

	}



	function xScale($x) {

		if (($this->xMax-$this->xMin)>0) {

			return $this->width * (($x-$this->xMin)/($this->xMax-$this->xMin));

		} else {

			return 0;

		}

	}



	function yScale($y) {

		if ((($this->yMax-$this->yMin))>0) {

			return $this->height * (($y-$this->yMin)/($this->yMax-$this->yMin));

		} else {

			return 0;

		}

	}



	function addPoint($d,$i=-5,$l=0) {

		if ($l+1>$this->lines) {

			$this->lines++;

			$this->numPoints[$l] = 0;

			$this->iVars[$l] = array();

			$this->dVars[$l] = array();

		}



		if (is_array($d)) {

			if (count($d)==3)

				return $this->addPoint($d[0],$d[1],$d[2]);

			elseif (count($d)==2 && isset($d[1]))

				return $this->addPoint($d[0],$d[1]);

			elseif (count($d)==2)

				return $this->addPoint($d[0],-5,$d[2]);

			else

				return $this->addPoint($d[0]);

		}



		if ($i==-5) {

			$i=(count($this->iVars[$l])>0?max($this->iVars[$l])+1:0);

		}



		$this->iVars[$l][] = $i;

		$this->dVars[$l][] = $d;

		$id = rand(1,10000000);

		$this->ids[$l][] = $id;

		$this->numPoints[$l]++;



		return $id;

	}



	function addBulkPoints($a,$sep=":") {

		if (is_string($a)) {

			$cDataSet = 0;

			foreach (explode(",",$a) as $e) {

				$e = explode($sep,$e);



				if (strpos($e[0],"|")) {

					$d = explode('|',$e[0]);

					$e[0] = $d[1];

					$cDataSet = $d[0];

				} 

				$e[2] = $cDataSet;



				if (isset($e[1])) {

					if (strpos($e[1],'-')) {

						$e[1] = strtotime($e[1]);

					}

				}



				$ids[] = $this->addPoint($e);

			}

		}elseif (func_num_args()>1) {

			$arg = func_get_args();

			foreach ($arg as $e)

				$ids[] = $this->addPoint($e);

		}elseif (is_array($a)) {

			foreach ($a as $e)

				$ids[] = $this->addPoint($e);

		} else {

			return false;

		}



		return $ids;

	}



	function delBulkPoints($a) {

		if (is_string($a)) {

			foreach (explode(",",$a) as $e) {

				$ids[] = $this->delPoint($e);

			}

		}elseif (is_array($a)){

			foreach ($a as $e)

				$ids[] = $this->delPoint($e);

		} else {

			$arg = func_get_args();

			foreach ($arg as $e) {

				$ids[] = $this->delPoint($e);

			}

		}



		return $ids;

	}



	function idSearch($b) {

		foreach ($this->ids as $k => $v) {

			$e = array_search($b,$v);



			if ($e!==false) {

				return array($e,$k);

			}

		}



		return false;

	}



	function delPoint($id,$k=-1) {

		if ($k==-1) {

			$k = $this->idSearch($id);

		}



		if ($k === false) {

			return $k;

		}



		unset($this->dVars[$k[1]][$k[0]],$this->iVars[$k[1]][$k[0]],$this->ids[$k[1]][$k[0]]);

		$this->numPoints[$k[1]]--;



		return true;

	}



	function clearPoints() {

		$this->dVars = array();

		$this->iVars = array();

		$this->ids   = array();



		foreach ($this->numPoints as $k => $e) {

			$this->numPoints[$k]=0;

		}

	}



	function demoData($i=10,$mi=0,$ma=10) {

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

			$this->addPoint(rand($mi,$ma));

		}

	}



	function error($x="Error",$ext=false) {

		$log = $this->getProp("logfile",false);



		if ($x!==true) {

			$this->errors[] = $x;

		} else {

			if (!$this->getProp("production",false)) {

				foreach ($this->errors as $k => $x) {

					imagestring($this->img,2,10,10+$k*12,$x,imagecolorallocate($this->img,255,0,0));

				}

			}



			if ($log) {

				$l = fopen($log,'a');



				if ($this->errors) {

					fwrite($l,"\nSESSION ".date("D M j G:i:s T Y").', '.$_SERVER['REMOTE_ADDR']."\n");

				}



				foreach ($this->errors as $k => $x) {

					fwrite($l,$x."\n");

				}



				fclose($l);

			}

		}



		if ($log && $ext) {

			$l = fopen($log,'a');

			fwrite($l,'FATAL ERROR: '.$x."\n".date("D M j G:i:s T Y").', '.$_SERVER['REMOTE_ADDR']."\n\n");

		}



		if (!$this->getProp("production",false)) {

			if ($ext==true) {

				trigger_error($x,E_USER_ERROR);

			}

		} else {

			trigger_error("Their was an error, please contact the webmaster",E_USER_ERROR);

		}

	}



	function importMySQL($table,$field,$rcodb=null,$user=null,$pass=null,$server="localhost",$freq=true){

		if (!is_resource($rcodb)) {

			$m = mysql_connect($server,$user,$pass);



			if (!$m) {

				$this->error("Could not connect to MySQL server.",true);

			}



			$d = mysql_select_db($rcodb,$m);



			if (!$d) {

				$this->error("Could not select MySQL database.",true);

			}



			$rcodb = $m;

		}



		$q = mysql_query("SELECT `$field` FROM $table");



		if (!$q) {

			$this->error("Error querying MySQL database, check table and field.",true);

		}



		while ($r = mysql_fetch_array($q, MYSQL_NUM)) {

			$a[] = $r[0];

		}



		if ($freq==true) {

			$s = array_count_values($a);



			foreach ($s as $e) {

				$this->addPoint($e);

			}



			$this->setProp("key",array_keys($s));

			$this->setProp("showkey",true);

		} else {

			$this->addBulkPoints($a);

		}

	}



	function importCSV($file, $format='l,d,i', $dl=0) { //Read the readme

		@$handle = fopen($file,"r");



		if (!$handle) {

			$this->error("Error opening CSV!", E_USER_ERROR);



			return false;

		}



		foreach (explode(',',$format) as $k => $s) {

			$pos[$s] = $k;

		}



		while (($data[] = fgetcsv($handle, 1000)) !== FALSE) {

			/* load data array from file contents */

		}



		foreach ($data as $k => $d) {

			if (isset($pos['i'])) {

				$i = $d[$pos['i']];

			} else {

				$i = -5;

			}



			if (isset($pos['l'])) {

				$l = $d[$pos['l']];

			} else {

				$l = $dl;

			}



			if ($d[$pos['d']] && $i) {

				$idArr[] = $this->addPoint($d[$pos['d']],$i,$l);

			}

		}



		return $idArr;

	}



	function importXML($file,$ind="i",$dep="d",$block="",$dl=0) { //Read the readme

		if ($block!="") {

			$eblock = "</".$block.">";

			$block  = "<".$block."( $dl=([0-9])*)?>";

		}



		$str = file_get_contents($file);



		if ($str==false) {

			$this->error("Error opening XML File!",E_USER_ERROR);



			return false;

		}



		$str = trim($str);

		$arr = array();



		if (preg_match_all("[$block<([$ind|$dep])>([0-9])*</[($ind|$dep)]><([$ind|$dep])>([0-9])*</[($ind|$dep)]>$eblock]",$str,$arr)==0) {

			$this->error("No data found in XML file, check format",true);

		}



		$i=($arr[3][0]==$ind?4:6);

		$d=($arr[3][0]==$ind?6:4);



		foreach ($arr[$d] as $k => $r) {

			$idArr[] = $this->addPoint($arr[$d][$k],$arr[$i][$k],(is_string($dl)?$arr[2][$k]:$dl));

		}



		return $idArr;

	}



	function graphFunction($func, $minX, $maxX, $l=0) {

		$inv = $this->getProp('funcinterval',.0625);

		$inv += .005;



		$this->evalmath->evaluate('graph(x)='.str_replace('$x','x',$func));



		for($x=$minX;$x<=$maxX;$x+=$inv) {

			$pts[] = $this->addPoint($this->evalmath->evaluate("graph($x)"),$x,$l);

		}



		$this->setProp('sort',false);



		return $pts;

	}



	function evaluate($f) {

		return $this->evalmath->evaluate($f);

	}



	function cacheImg($img=0) {

		if (isset($this->imgCache)) {

			return $this->imgCache;

		} else {

			$this->imgCache = $img;

		}



		return false;

	}



	/* determine the maximum value in a single dimensional array */

	function multiMax($a) {

		$max = -1000000000;



		foreach ($a as $e) {

			if (max($e)>$max) {

				$max = max($e);

			}

		}



		return $max;

	}



	/* determine the mimimum value in a single dimensional array */

	function multiMin($a) {

		$min = 100000000;



		foreach ($a as $e) {

			if (min($e)<$min) {

				$min = min($e);

			}

		}



		return $min;

	}



	/* interesting array index value checker */

	function actSort($a,$b) {

		return ($a[0] == $b[0] ? 0 : ($a[0] < $b[0] ? -1 : 1) );

	}



	function indSort($e) {

		for($i=0; $i<$this->numPoints[$e]; $i++) {

			$tiVars[] = array($this->iVars[$e][$i], $this->dVars[$e][$i], $this->ids[$e][$i]);

		}



		usort($tiVars, array("graph", "actSort"));



		foreach ($tiVars as $k => $g) {

			$this->iVars[$e][$k] = $g[0];

			$this->dVars[$e][$k] = $g[1];

			$this->ids[$e][$k] = $g[2];

		}

	}



	function drawBar($x1, $y1, $x2, $y2, $ccol) {

		$mode = $this->getProp("barstyle",0);

		$colorlist = $this->getProp("colorlist",false);



		if ($colorlist === true || $colorlist === 1 || $colorlist === "true") {

			$colorlist = array(array(255, 203, 3),array(220, 101, 29),array(189, 24, 51),array(214, 0, 127),array(98, 1, 96),array(0, 62, 136),array(0, 102, 179),array(0, 145, 195),array(0, 115, 106),array(178, 210, 52),array(137, 91, 74),array(82, 56, 47));

		}



		if ($colorlist) {

			$color = $colorlist[$ccol];

		}



		if (!isset($color[3])) {

			$color[3] = 0;

		} else {

			$color = $this->getProp("color", array(0,0,255,0));

		}



		$bord = $this->getProp("bordercolor",array(0,0,0,0));



		switch ($mode) {

		case 0:

			if ($this->mode!="div") {

				imagefilledrectangle($this->img,$x1,$y1,$x2,$y2,imagecolorallocatealpha($this->img,$color[0],$color[1],$color[2],$color[3]));

				imagerectangle($this->img,$x1,$y1,$x2,$y2,imagecolorallocatealpha($this->img,$bord[0],$bord[1],$bord[2],$bord[3]));

			} else {

				$this->div->setColor($color[0],$color[1],$color[2]);

				$this->div->drawFilledRect($x1,$y1,$x2-$x1,$y2-$y1);

				$this->div->setColor($bord[0],$bord[1],$bord[2]);

				$this->div->drawRect($x1,$y1,$x2-$x1,$y2-$y1);

			}



			break;

		case 1:

			$ge = $this->getProp("gendcolor",array(0,0,0,0));

			$gs = $this->getProp("gstartcolor",array(255,255,255,0));



			for($i=0;$i<4;$i++) {

				$c[$i] = ($ge[$i]-$gs[$i])/($y2-$y1);

				$cc[$i] = $gs[$i];

			}



			for($y=$y1;$y<$y2;$y++) {

				for($i=0;$i<4;$i++) {

					$cc[$i] += $c[$i];

				}



				if ($this->mode!="div") {

					imageline($this->img,$x1,$y,$x2,$y,imagecolorallocatealpha($this->img,$cc[0],$cc[1],$cc[2],$cc[3]));

				} else {

					$this->div->setColor($cc[0],$cc[1],$cc[2]);

					$this->div->drawLine($x1+1,$y,$x2,$y);

				}

			}



			break;

		default:

			$this->error("Bar style not understood.");



			break;

		}

	}



	function flipMulti(&$arr) {

		foreach ($arr as $i => $e) {

			foreach ($e as $j => $k) {

				$n[$j][$i] = $k;

			}

		}



		$arr = $n;

	}



	function pieSort($a,$b) {

		return ($a==$b ? 0 : (abs($a-90) > abs($b-90) ? -1 : 1));

	}



	function drawPie($ex) {

		$cx = $this->width/2;

		$cy = $this->height/2+20;

		$ang = $this->getProp("pieangle",35);



		if ($ang>90) {

			$this->error("Angles over 90 cannot be properly graphed.");

		}



		$h = min($this->width,$this->height-10);

		$h = ($h*((90-$ang)/90))+3;

		$w = min(min($this->width,$this->height-10)+$ang*1.5,$this->width);

		$colorlist = $this->getProp('colorlist',array(array(125, 203, 3),array(220, 101, 29),array(189, 24, 51),array(34, 78, 120),array(120, 1, 60),array(0, 62, 136),array(0, 102, 179),array(0, 145, 195),array(0, 115, 106),array(178, 210, 52),array(137, 91, 74),array(82, 56, 47)));

		$da['data'] = $this->dVars[$ex];

		$da['key'] = $this->iVars[$ex];



		foreach ($da['data'] as $i => $e){ //Allocate colors

			$rcolor[$i] = imagecolorallocate($this->img,$colorlist[$i][0],$colorlist[$i][1],$colorlist[$i][2]);

			$dcolor[$i] = imagecolorallocate($this->img,abs($colorlist[$i][0]-30),abs($colorlist[$i][1]-30),abs($colorlist[$i][2]-30));

		}



		$datasum = array_sum($da['data']);



		for($i=0;$i<count($da['data']);$i++){

			$da['part'][$i] = $da['data'][$i] / $datasum; //Get percents

		}



		if (($fd=array_sum($da['part']))<1) {

			$da['part'][count($da['part'])-1] += 1-$fd;

		}



		for($i=0;$i<count($da['data']);$i++) {

			$da['angle'][$i] = $da['part'][$i] * 360; //Get angles

		}



		for($i=0;$i<count($da['data']);$i++) {

			@$da['ansum'][$i] = array_sum(array_slice($da['angle'],0,$i+1)); //Get sums from 0 to each angle

		}



		for($i=1;$i<count($da['ansum'])+1;$i++) {

			$sortkeys[] = $da['ansum'][$i-1]; //Create sort array to make sure pie is graphed back to front

		}



		for($i=1;$i<count($sortkeys)+1;$i++) {

			if ($sortkeys[$i-1]<90 && $sortkeys[$i]>90) { // Make sure the one that actually crosses 90 is last

				$sortkeys[$i] = 90;

			}

		}



		uasort($sortkeys,array('graph','piesort'));



		$sk = array_keys($sortkeys);



		for($p=0;$p<=count($da['data'])-1;$p++) {

			$n = $sk[$p];

			$f = $n - 1;



			if ($da['angle'][$n] != 0) {

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

					if (($da['ansum'][$n]<=180 || $da['ansum'][$f]<=180) || ($n == count($da['data'])-1)) { //Draw 3d

						@imagefilledarc($this->img, $cx, $cy+$i, $w, $h, $da['ansum'][$f], $da['ansum'][$n], ($n==count($da['data'])-1?$rcolor[$n]:$dcolor[$n]), IMG_ARC_PIE);

					}

				}

			}

		}



		for($i=0;$i<=count($da['data'])-1;$i++) {

			$n = $i - 1;



			if ($da['angle'][$i] != 0) { //Draw top

				@imagefilledarc($this->img, $cx, $cy, $w, $h, $da['ansum'][$n], $da['ansum'][$i], $rcolor[$i], IMG_ARC_PIE);

			}

		}



		for($i=0;$i<count($da['data']);$i++) {

			@$da['ansum'][$i] = array_sum(array_slice($da['angle'],0,$i+1));

		}



		for($i=0;$i<count($da['data']);$i++) { //Draw keys

			$text  = ($this->getProp("useval",false)? $da['data'][$i] : round($da['part'][$i]*100,0).'%');



			$size = imagettfbbox($this->getProp("textsize",8),$this->getProp("textAngle",0),$this->getProp("font",realpath($this->font_name)),$text);



			if (!isset($da['ansum'][$i-1])) {

				$valuea = 0;

			} else {

				$valuea = $da['ansum'][$i-1];

			}



			if (!isset($da['ansum'][$i])) {

				$valueb = 0;

			} else {

				$valueb = $da['ansum'][$i];

			}



			$avang = ($valuea+$valueb)/2;



			imagettftext($this->img,

				$this->getProp("textsize",8),

				$this->getProp("textAngle",0),

				cos(deg2rad($avang))*$w/2+$cx+($avang<90||$avang>270?$this->getProp("numspace",5):-$size[2]-$this->getProp("numspace",5)),

				sin(deg2rad($avang))*$h/2+$cy+($avang<180&&$avang>0?-$size[5]+$ang:$size[5]),imagecolorallocate($this->img,0,0,0),

				$this->getProp("font",realpath($this->font_name)),

				$text);

		}

	}



	function internalGraph() {

		if ($this->getProp("scale","numeric")=="date") {

			$start = $this->getProp("startdate",-9);

			$end = $this->getProp("enddate",time());



			if (is_string($start)) {

				$start = strtotime($start);

			}



			if (is_string($end)) {

				$end = strtotime($end);

			}

		}



		foreach ($this->iVars as $e => $g) {

			foreach ($g as $k => $i) {

				if (substr($this->iVars[$e][$k],0,2)=='d:') {

					$this->iVars[$e][$k] = strtotime(substr($this->iVars[$e][$k],2))/($end-$start);

				}

			}

		}



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

			if ($this->getProp("reverse",0,$i)==1) {

				$this->dVars = array_reverse($this->dVars[$i]);

			}



			if ($this->getProp("flip",0,$i)==1) {

				$this->dVars = array_reverse($this->dVars[$i]);

				$this->iVars = array_reverse($this->iVars[$i]);

			}



			if ($this->getProp("sort",true,$i)==true) {

				$this->indSort($i);

			}

		}



		$time = microtime(true);

		$nu = ($this->getProp('type','line') != 'line'?1:2);



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

			if (isset($this->numPoints[$k])==false || $this->numPoints[$k]<$nu) {

				$this->error("Not enough points in dataset ".$k);

			}

		}



		if ($this->getProp("autoSize",true)) {

			if ($this->getProp("autoSizeX",true)) {

				$this->xMax = $this->multiMax($this->iVars);

				$this->xMin = $this->multiMin($this->iVars);

			}



			if ($this->getProp("autoSizeY",true)) {

				$this->yMax = $this->multiMax($this->dVars);

				$this->yMin = $this->multiMin($this->dVars);

			}

		}



		if ($this->getProp("type","line")=="bar" && $this->getProp("barnone",true)) {

			$this->yMin = 0;

			$this->setProp("xincpts",$this->numPoints[0]);

		}



		if ($this->getProp("autoScl",true)) {

			if ($this->getProp("autoSclX",true)) {

				round($this->setProp("xsclmax",$this->xMax),1);

				round($this->setProp("xsclmin",$this->xMin),1);

			}



			if ($this->getProp("autoSclY",true)) {

				round($this->setProp("ysclmax",$this->yMax),1);

				round($this->setProp("ysclmin",$this->yMin),1);

			}

		}



		@($this->setProp("xSclInc",(($this->getProp("xsclmax")-$this->getProp("xsclmin"))/(float)$this->getProp("xsclpts"))*$this->width/(float)($this->getProp("xsclmax")-$this->getProp("xsclmin"))));

		@($this->setProp("ySclInc",(($this->getProp("ysclmax")-$this->getProp("ysclmin"))/(float)$this->getProp("ysclpts"))*$this->height/(float)($this->getProp("ysclmax")-$this->getProp("ysclmin"))));



		$this->xPts = array();

		$this->yPts = array();



		foreach ($this->iVars as $e => $g) {

			foreach ($g as $k => $i) {

				$f = $this->xScale($i);

				$this->xPts[$e][] = $f;

			}

		}



		foreach ($this->dVars as $e => $g) {

			foreach ($g as $k => $i) {

				$f = $this->yScale($i);

				$this->yPts[$e][] = $f;

			}

		}



		$backcolor = $this->getProp("backcolor");

		$grids = $this->getProp("gridcolor",array(80,80,80));



		if ($this->getProp("showvertscale",true)) {

			for($i=0;$i<$this->getProp("yincpts")+1;$i++) { //Generate scale information for use in the graph image creation

				$vertScaleText[$i] = trim(round((($i/$this->getProp("yincpts"))*($this->yMax-$this->yMin))+$this->yMin,1));



				$vertScaleSize[$i] = imagettfbbox($this->getProp("textsize",8),

					$this->getProp("textAngle",0),

					$this->getProp("font",realpath($this->font_name)),

					$vertScaleText[$i]);



				$cSize[$i] = $vertScaleSize[$i][4];

			}



			$max = max($cSize);

			$this->setProp('actwidth',$this->width+10+$max);

		}



		$this->img = imagecreatetruecolor($this->getProp("actwidth"),$this->getProp("actheight")); // Create image.

		$back = imagecolorallocate($this->img,$backcolor[0],$backcolor[1],$backcolor[2]);

		$grid = imagecolorallocate($this->img,$grids[0],$grids[1],$grids[2]);



		imagefill($this->img,0,0,$back); //Fill with back color



		if ($this->getProp("showgrid",true)) {

			for($i=0;$i<round($this->getProp("sclline")*$this->getProp("onfreq"),0);$i++) { //Create grid line style

				$style[] = $grid;

			}



			for($i=0;$i<round($this->getProp("sclline")*(1-$this->getProp("onfreq")),0);$i++) {

				$style[] = IMG_COLOR_TRANSPARENT;

			}



			imagesetstyle($this->img, $style);



			if ($this->getProp("showxgrid",true)) {

				for($i=1;$i<$this->getProp("xsclpts");$i++) { //Create grid

					if ($this->mode=='image') {

						imageline($this->img, round($i*$this->getProp("xSclInc"),0), 0, round($i*$this->getProp("xSclInc"),0), $this->height, IMG_COLOR_STYLED);

					} else {

						$this->div->setColor($grids[0],$grids[1],$grids[2]);

						$this->div->setStyle('dotted');

						$this->div->drawLine(round($i*$this->getProp("xSclInc"),0),0,round($i*$this->getProp("xSclInc"),0),$this->height);

					}

				}

			}



			if ($this->getProp("showygrid",true)) {

				for($i=1;$i<$this->getProp("ysclpts");$i++) {

					if ($this->mode=='image') {

						imageline($this->img, 0, round($i*$this->getProp("ySclInc"),0), $this->width, round($i*$this->getProp("ySclInc"),0), IMG_COLOR_STYLED);

					} else {

						$this->div->drawLine(0,round($i*$this->getProp("ySclInc"),0),$this->width,round($i*$this->getProp("ySclInc"),0));

					}

				}

			}



			if ($this->mode=='image') {

				imageline($this->img, 0, $this->height-1, $this->width-1, $this->height-1, IMG_COLOR_STYLED); //Last lines

				imageline($this->img, $this->width-1, $this->height-1, $this->width-1, 0, IMG_COLOR_STYLED);

				imageline($this->img, 0, $this->height, 0, 0, IMG_COLOR_STYLED);

				imageline($this->img, 0, 0, $this->width, 0, IMG_COLOR_STYLED);

			} else {

				$this->div->drawLine(0,$this->height-1,$this->width-1,$this->height-1);

				$this->div->drawLine($this->width-1,$this->height-1,$this->width-1,0);

				$this->div->drawLine(0,$this->height,0,0);

				$this->div->drawLine(0,0,$this->width,0);

				$this->div->setStyle(1);

			}

		}



		if ($this->getProp("type","line")!="pie") {

			if ($this->getProp("showhorizscale",true)) {

				if ($this->getProp("scale","numeric")=="date") {

					$start = $this->getProp("startdate",-9);

					$end = $this->getProp("enddate",time());



					if (is_string($start)) {

						$start = strtotime($start);

					}



					if (is_string($end)) {

						$end = strtotime($end);

					}



					$start = getdate($start);

					$end = getdate($end);

					$dDate = ($end[0] - $start[0])/$this->getProp("xincpts");

					$showyr = $this->getProp("showyear",($start['year']!=$end['year']));

					$format = $this->getProp("dateformat",1);

				}elseif (is_array($this->getProp("scale","numeric"))) {

					$scale = $this->getProp("scale");

					$this->setProp("xincpts",count($scale)-1);

				}



				for($i=0;$i<$this->getProp("xincpts")+1;$i++) { //Create horiz scale

					if ($this->getProp("scale","numeric")=="numeric") {

						$text = ($this->getProp("type","line")=="bar"?$i:trim(round((($i/$this->getProp("xincpts"))*($this->xMax-$this->xMin))+$this->xMin,1)));

					}elseif ($this->getProp("scale","numeric")=="date") {

						$date = getdate($start[0]+($i*$dDate));



						if ($date['mday']>15 && $this->getProp('rounddateto',false)=='month') {

							$date = getdate($start[0]+(($i+0.5)*$dDate));

						}



						$text = ($format<=2?substr($date['month'],0,3):$date['month']);



						if ($showyr) {

							$text .= " ".substr($date['year'],($format==4 || $format==2?0:2),($format==4 || $format==2?4:2));

						}

					}elseif (is_array($this->getProp("scale","numeric"))) {

						$text = $scale[$i];

					} else {

						$this->error("Scale format not understood.");

					}



					$size = imagettfbbox($this->getProp("textsize",8),

						$this->getProp("textAngle",0),

						$this->getProp("font",realpath($this->font_name)),

						$text);



					if ($this->mode=="image") {

						imagettftext($this->img,$this->getProp("textsize",8),

							$this->getProp("textAngle",0),

							round(($i*($this->width/$this->getProp("xincpts")))-($i!=$this->getProp("xincpts")?($i!=0?(.5*$size[2]):0):$size[2]),0)-($this->getProp("type","line")=="bar"?.5*($this->width/count($this->xPts[0])):0),

							$this->height+abs($size[5])+3,

							$grid,

							$this->getProp("font",realpath($this->font_name)),

							$text);

					} else {

						$this->div->setFontSize(8);

						$this->div->drawString(round(($i*($this->width/$this->getProp("xincpts")))-($i!=$this->getProp("xincpts")?($i!=0?(.5*$size[2]):0):$size[2]),0)-($this->getProp("type","line")=="bar"?.5*($this->width/count($this->xPts[0])):0),$this->height,$text);

					}

				}

			}

			if ($this->getProp("showvertscale",true)) {

				for($i=0;$i<$this->getProp("yincpts")+1;$i++) { //Create vert scale

					$text = $vertScaleText[$i];

					$size = $vertScaleSize[$i];



					if ($this->mode=="image") {

						imagettftext($this->img,

							$this->getProp("textsize",8),

							$this->getProp("textAngle",0),

							$this->width+3,round((($this->getProp("yincpts")-$i)*($this->height/$this->getProp("yincpts")))-($text!=$this->yMax?($text!=$this->yMin?(.5*$size[5]):0):$size[5]),0),

							$grid,

							$this->getProp("font",realpath($this->font_name)),

							$text);

					} else {

						$this->div->setFontSize(8);

						$this->div->drawString($this->width+3,

							round((($this->getProp("yincpts")-$i)*($this->height/$this->getProp("yincpts")))-($i==0?abs($size[5]):0),0),

							$text);

					}

				}

			}

		}



		foreach ($this->xPts as $ex => $ind) {

			$xPts = $this->xPts[$ex];

			$yPts = $this->yPts[$ex];

			$g = $this->width/count($xPts);

			$color = $this->getProp("color",array(0,0,255,0),$ex);



			$fore = imagecolorallocatealpha($this->img,$color[0],$color[1],$color[2],$color[3]);



			if ($this->getProp("type","line")=="line") { //Draw graph

				for($i=1;$i<$this->numPoints[$ex];$i++) {

					$this->imageSmoothAlphaLine($this->img,$xPts[$i-1],$this->height-$yPts[$i-1],$xPts[$i],$this->height-$yPts[$i],$color[0],$color[1],$color[2],$color[3]);

				}

			}elseif ($this->getProp("type","line")=="bar") {

				for($i=0;$i<$this->numPoints[$ex];$i++) {

					$this->drawBar($g*$i+($i==0?$g*(1-$this->getProp("barwidth",1)):0),$this->height-$yPts[$i],$g*$i+$this->getProp("barwidth",1)*$g,$this->height-1,$i);

				}

			}elseif ($this->getProp("type","line")=="pie"){

				$this->drawPie($ex);

			}elseif ($this->getProp("type","line")!="dot") {

				$this->error("Type property not understood.",E_USER_ERROR);

			}



			$width  = $this->getProp("pointwidth",5,$ex);

			$height = $this->getProp("pointheight",$width,$ex);

			$point  = $this->getProp("pointcolor",$color,$ex);



			$col = imagecolorallocatealpha($this->img,$point[0],$point[1],$point[2],$point[3]);



			if ($this->getProp("pointstyle",0,$ex)!=0) {

				foreach ($xPts as $k => $xpt) {

					$x = $xPts[$k];

					$y = $this->height-$yPts[$k];

					if ($this->getProp("endstyle",0,$ex)!=0 && $k==count($xPts)-1) {

						continue;

					}



					switch ($this->getProp("pointstyle",0,$ex)) { //Draw points

					case 1: //Filled rectangle

						imagefilledrectangle($this->img,$x-.5*$width,$y-.5*$height,$x+.5*$width,$y+.5*$height,$col);



						break;

					case 2: //Open rectangle

						if (!$this->getProp("clearback",false,$ex)) {

							imagefilledrectangle($this->img,$x-.5*$width,$y-.5*$height,$x+.5*$width,$y+.5*$height,$back);

						}



						imagerectangle($this->img,$x-.5*$width,$y-.5*$height,$x+.5*$width,$y+.5*$height,$col);



						break;

					case 3: //Filled Triangle

						imagefilledpolygon($this->img,array($x-.5*$width,$y+.5*$height,$x+.5*$width,$y+.5*$height,$x,$y-.5*$height),3,$col);



						break;

					case 4: //Open Triangle

						if (!$this->getProp("clearback",false,$ex)) {

							imagefilledpolygon($this->img,array($x-.5*$width,$y+.5*$height,$x+.5*$width,$y+.5*$height,$x,$y-.5*$height),3,$back);

						}



						imagepolygon($this->img,array($x-.5*$width,$y+.5*$height,$x+.5*$width,$y+.5*$height,$x,$y-.5*$height),3,$col);



						break;

					case 5: //Filled n-gon, for testing only!

						$n = $this->getProp("pointsides",7);



						if ($n<7) {

							$this->error("Point shape must be 7 or more sides!");

						}elseif ($n>30){

							$this->error("Just use a circle ;)");

						}



						$s = $width;

						unset($points);



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

							$o=($i)*(360/$n);

							$points[] = ($s*cos($o))+$x;

							$points[] = ($s*sin($o))+$y;

						}



						imagefilledpolygon($this->img,$points,$n,$col);



						break;

					case 6: //Open n-gon, for testing only!

						$n = $this->getProp("pointsides",7,$ex);



						if ($n<7) {

							$this->error("Point shape must be 7 or more sides!");

						}elseif ($n>30) {

							$this->error("Just use a circle ;)");

						}



						$s = $width;

						unset($points);



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

							$o=($i)*(360/$n);

							$points[] = ($s*cos($o))+$x;

							$points[] = ($s*sin($o))+$y;

						}



						if (!$this->getProp("clearback",false,$ex)) {

							imagefilledpolygon($this->img,$points,$n,$back);

						}



						imagepolygon($this->img,$points,$n,$col);



						break;

					case 7:	//Filled ellipse, make width = height for a circle

						imagefilledellipse($this->img,$x,$y,$width,$height,$col);



						break;

					case 8: //Open ellipse

						if (!$this->getProp("clearback",false,$ex)) {

							imagefilledellipse($this->img,$x,$y,$width,$height,$back);

						}



						imageellipse($this->img,$x,$y,$width,$height,$col);



						break;

					case 9: //Image

						if ($this->getProp("pointimgsrc",false,$ex)===false) {

							$this->error("You must set the pointimgsrc property before using the image point style",true);

						}



						if (!isset($this->imgCache)) {

							$im = $this->loadimg($this->getProp("pointimgsrc",false,$ex));



							if ($this->getProp("pointimgscale",false,$ex)) {

								$height = round($width*(ImageSX($im)/ImageSY($im)),0);

							}



							$tmp = imagecreatetruecolor($width,$height);



							if (!imagecopyresized($tmp,$im,0,0,0,0,$width,$height,ImageSX($im),ImageSY($im))) {

								$this->error("Error resizing point image");

							}



							$this->cacheImg($tmp);

						}



						$tmp = $this->cacheImg();



						if (!imagecopy($this->img,$tmp,$x-.5*$width,$y-.5*$height,0,0,$width,$height)) {

							$this->error("Error inserting point image");

						}



						break;

					}

				}



				unset($this->imgCache);

			}



			$arrow = $this->getProp("arrowcolor",$color,$ex);



			$col = imagecolorallocatealpha($this->img,$arrow[0],$arrow[1],$arrow[2],$arrow[3]);



			$x2 = $xPts[count($xPts)-1];

			$y2 = $this->height-$yPts[count($yPts)-1];

			$x1 = $xPts[count($xPts)-2];

			$y1 = $this->height-$yPts[count($yPts)-2];



			switch ($this->getProp("endstyle",0,$ex)){ //Draw end

			case 1: //Open arrow

				$arrhead = $this->getProp("arrowwidth",25,$ex);

				$arrang = $this->getProp("arrowangle",14,$ex);

				$arrow = $this->drawArrowheads ($x1, $y1, $x2, $y2, $arrhead, $arrang);



				if (!$this->getProp("clearback",false,$ex)) {

					imagefilledpolygon($this->img,array (

						$arrow['x1'], $arrow['y1'],

						$arrow['x2'], $arrow['y2'],

						$x2, $y2

					),3,$back);

				}



				imageline($this->img, $arrow['x1'], $arrow['y1'], $arrow['x2'], $arrow['y2'], $col);

				imageline($this->img, $x2, $y2, $arrow['x1'], $arrow['y1'], $col);

				imageline($this->img, $x2, $y2, $arrow['x2'], $arrow['y2'], $col);



				break;

			case 2: //Filled arrow

				$arrhead = $this->getProp("arrowwidth",25,$ex);

				$arrang = $this->getProp("arrowangle",14,$ex);

				$arrow = $this->drawArrowheads ($x1, $y1, $x2, $y2, $arrhead, $arrang);



				imagefilledpolygon($this->img,array (

					$arrow['x1'], $arrow['y1'],

					$arrow['x2'], $arrow['y2'],

					$x2, $y2

				),3,$col);



				break;

			}

		}



		$sX = ImageSX($this->img);

		$sY = ImageSY($this->img);



		$font   = $this->getProp("font", realpath($this->font_name));

		$labels = $this->getProp("labelcolor", array(0,0,0,0));



		$label  = imagecolorallocatealpha($this->img, $labels[0], $labels[1], $labels[2], $labels[3]);



		$fX = $sX;

		$fY = $sY;

		$tB = 0;



		if ($this->getProp("title",false)!==false) {

			$title = $this->getProp("title");

			$tsize = imagettfbbox($this->getProp("titlesize",24),0,$font,$title);

			$tB = abs($tsize[5])+10;

			$fY += $tB + 5;

		}



		if ($this->getProp("xlabel",false)!==false) {

			$xlabel = $this->getProp("xlabel");

			$xsize = imagettfbbox($this->getProp("labelsize",14),0,$font,$xlabel);

			$fY += abs($xsize[5])+10;

		}



		if ($this->getProp("ylabel",false)!==false) {

			$ylabel = $this->getProp("ylabel");

			$ysize = imagettfbbox($this->getProp("labelsize",14),90,$font,$ylabel);

			$fX += abs($ysize[2])+15;

		}



		if ($fX != $sX || $fY != $sY) {

			$timg = imagecreatetruecolor($fX,$fY);

			imagecopy($timg,$this->img,0,$tB,0,0,$sX,$sY);

			imagefill($timg,0,0,$back);



			if ($this->getProp("ylabel",false)!==false) {

				imagettftext($timg,$this->getProp("labelsize",14),90,$sX+10,round(($fY-$ysize[5])/2,0),$label,$font,$ylabel);

			}



			if ($this->getProp("xlabel",false)!==false) {

				imagettftext($timg,$this->getProp("labelsize",14),0,round(($fX-abs($xsize[2]))/2,0),$sY+$tB+5,$label,$font,$xlabel);

			}



			if ($this->getProp("title",false)!==false) {

				imagettftext($timg,$this->getProp("titlesize",24),0,round(($fX-abs($tsize[2]))/2,0),abs($tsize[5]),$label,$font,$title);

			}



			$this->img = $timg;

		}



		if ($this->getProp("benchmark",false)) {

			echo (round(microtime(true) - $time,3)*1000)."ms";

		}



		if ($this->getProp("showkey",false)) {

			$acthei = $this->getProp("actheight",$this->height);

			$actwid = $this->getProp("actwidth",$this->width);

			$size   = $this->getProp("keysize", 10);

			$font   = $this->getProp("keyfont", realpath($this->keyfont_name));



			$indhei = 0;

			$indwid = 0;

			$type = $this->getProp("type",'line');



			if ($type!='line') {

				$keys = $this->getProp('key',false);

				$num  = $this->numPoints[0];

				$dis  = $this->getProp("keyinfo",0);



				if ($dis>3 || $dis<0) {

					$this->error("keyinfo not understood.");

				}



				if ($dis!=0) {

					$d = $this->dVars[0];

					$g = array_sum($d);



					foreach ($d as $i => $e) {

						$pr[] = ($e/$g)*100;

					}



					if (($fd=array_sum($pr))<1) {

						$pr[count($pr)-1] += 1-$fd;

					}



					foreach ($d as $i => $e) {

						$p[] = round($pr[$i],0).'%';

					}



					if ($dis==1 || $dis==3) {

						foreach ($keys as $i => $k) {

							$keys[$i] = $p[$i].' '.$k;

						}

					}



					if ($dis==2 || $dis==3) {

						foreach ($keys as $i => $k) {

							$keys[$i] = $d[$i].' '.$k;

						}

					}

				}

			} else {

				$num = $this->lines;

			}



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

				if ($type=='line') {

					$keys[$i] = $this->getProp("key",false,$i);



					if ($keys[$i]==false) {

						$this->error("You must set the keys property for dataset $i.");

					}

				}



				$ksize[$i]['size'] = imagettfbbox($size, 0, $font, $keys[$i]);

				$indhei = max($indhei,$ksize[$i]['height'] = abs($ksize[$i]['size'][5]));

				$indwid = max($indwid,$ksize[$i]['width'] = abs($ksize[$i]['size'][2])+$indhei+5);

			}



			$indhei += 4;

			$indwid += 10;

			$wspc    = $this->getProp("keywidspc",10);

			$oldwid  = $actwid;

			$oldhei  = $acthei;

			$khei    = $indhei*$num+14;

			$actwid  = $actwid+$indwid+$wspc;

			$acthei  = max($acthei,$khei);



			$timg = imagecreatetruecolor($actwid,$acthei);

			$backcolor = $this->getProp("backcolor");



			$back = imagecolorallocate($this->img,$backcolor[0],$backcolor[1],$backcolor[2]);



			imagefill($timg,0,0,$back);

			imagecopy($timg,$this->img,0,0,0,0,$oldwid,$oldhei);



			$this->img = $timg;



			$y = ($acthei-$khei)/2;

			$x = $oldwid+$wspc+4;



			imagerectangle($this->img,$x-4,$y,$actwid-1,$khei+($acthei-$khei)/2+4,imagecolorallocate($this->img,0,0,0));



			$black = imagecolorallocate($this->img,0,0,0);



			if ($this->getProp('type','line')=='bar') {

				$colorlist = $this->getProp("colorlist",false);



				if ($colorlist === true || $colorlist === 1 || $colorlist === "true") {

					$colorlist = array(array(255, 203, 3),array(220, 101, 29),array(189, 24, 51),array(214, 0, 127),array(98, 1, 96),array(0, 62, 136),array(0, 102, 179),array(0, 145, 195),array(0, 115, 106),array(178, 210, 52),array(137, 91, 74),array(82, 56, 47));

				}



				if ($colorlist) {

					$col = $colorlist[$i-1];

				} else {

					$this->error("colorlist must be set for keys to work.",E_USER_ERROR);

				}

			} else {

				$colorlist = $this->getProp('colorlist',array(array(125, 203, 3),array(220, 101, 29),array(189, 24, 51),array(34, 78, 120),array(120, 1, 60),array(0, 62, 136),array(0, 102, 179),array(0, 145, 195),array(0, 115, 106),array(178, 210, 52),array(137, 91, 74),array(82, 56, 47)));

			}



			foreach ($keys as $i => $k) {

		 		if ($type=='line') {

					$col = $this->getProp("color",array(0,0,255,0),$i);

				} else {

					$col = $colorlist[$i];

				}



				if (isset($col[3])) {

					$alpha = $col[3];

				} else {

					$alpha = 0;

				}



		 		$fco = imagecolorallocatealpha($this->img, $col[0], $col[1], $col[2], $alpha);



		 		imagefilledrectangle($this->img,$x,$y+=4,$x+$indhei-4,$y+=$indhei-2,$fco);



		 		$y-=$indhei-2+4;



		 		imagerectangle($this->img,$x,$y+=4,$x+$indhei-4,$y+=$indhei-2,$black);

		 		imagettftext($this->img,$size,0,$x+$indhei,$y-1,$black,$font,$k);

		 	}

		}



		$this->error(true);



		return true;

	}



	function loadimg($file) {

		if (substr($file,-4)==".png") {

			$im = imagecreatefrompng($file);

		}elseif (substr($file,-4)==".gif") {

			$im = imagecreatefromgif ($file);

		}elseif (substr($file,-4)==".jpg" || substr($file,-5)==".jpeg") {

			$im = imagecreatefromjpeg($file);

		}elseif (substr($file,-4)==".bmp") {

			$im = imagecreatefromwbmp($file);

		} else {

			$this->error("Image format not understood",true);

		}



		return $im;

	}



	function imageSmoothAlphaLine ($image, $x1, $y1, $x2, $y2, $r, $g, $b, $alpha=0) { //Thanks php.net poster

		if ($this->mode=='image') {

			if ($x2==$x1) {

				$x2++;

			}



			if ($y2==$y1) {

				$y2++;

			}



			$icr = $r;$icg = $g;$icb = $b;$dcol = imagecolorallocatealpha($image, $icr, $icg, $icb, $alpha);$m = ($y2 - $y1) / ($x2 - $x1);$b = $y1 - $m * $x1;



			if (abs ($m) <2) {

				$x = min($x1, $x2);$endx = max($x1, $x2) + 1;

				while ($x < $endx) {

					$y = $m * $x + $b;$ya = ($y == floor($y) ? 1: $y - floor($y));$yb = ceil($y) - $y;$trgb = ImageColorAt($image, $x, floor(abs($y)));$tcr = ($trgb >> 16) & 0xFF;$tcg = ($trgb >> 8) & 0xFF;$tcb = $trgb & 0xFF;imagesetpixel($image, $x, floor($y), imagecolorallocatealpha($image, ($tcr * $ya + $icr * $yb), ($tcg * $ya + $icg * $yb), ($tcb * $ya + $icb * $yb), $alpha));$trgb = ImageColorAt($image, $x, ceil(abs($y)));$tcr = ($trgb >> 16) & 0xFF;$tcg = ($trgb >> 8) & 0xFF;$tcb = $trgb & 0xFF;imagesetpixel($image, $x, ceil($y), imagecolorallocatealpha($image, ($tcr * $yb + $icr * $ya), ($tcg * $yb + $icg * $ya), ($tcb * $yb + $icb * $ya), $alpha));$x++;

				}

			} else {

				$y = min($y1, $y2);$endy = max($y1, $y2) + 1;



				while ($y < $endy) {

					@$x = ($y - $b) / $m;

					$xa = ($x == floor($x) ? 1: $x - floor($x));$xb = ceil($x) - $x;$trgb = ImageColorAt($image, floor(abs($x)), $y);$tcr = ($trgb >> 16) & 0xFF;$tcg = ($trgb >> 8) & 0xFF;$tcb = $trgb & 0xFF;



					imagesetpixel($image, floor($x), $y, imagecolorallocatealpha($image, ($tcr * $xa + $icr * $xb), ($tcg * $xa + $icg * $xb), ($tcb * $xa + $icb * $xb), $alpha));$trgb = ImageColorAt($image, ceil(abs($x)), $y);$tcr = ($trgb >> 16) & 0xFF;$tcg = ($trgb >> 8) & 0xFF;$tcb = $trgb & 0xFF;imagesetpixel ($image, ceil(abs($x)), $y, imagecolorallocatealpha($image, ($tcr * $xb + $icr * $xa), ($tcg * $xb + $icg * $xa), ($tcb * $xb + $icb * $xa), $alpha));$y++;

				}

			}

		} else {

			$this->div->setColor($r,$g,$b);

			$this->div->drawLine($x1,$y1,$x2,$y2);

		}

	}



	function drawArrowheads ($x1, $y1, $x2, $y2, $arrhead, $arrang) { //Thanks php.net poster (tried to do the math myself, not fun :()

		$debug = false;



		if (($x2-$x1)==0) {

			if ($y1 == 0) {

				$slope = 0;

			} else {

				$slope = 'INFINITE';

			}

		} else {

			$slope = -($y2-$y1)/($x2-$x1);

		}



		if ($debug) {

			echo ("Values of xy.. before add/sub</br>");

			echo ("$x1, $y1   $x2, $y2</br>");

		}



		if ($slope == 'INFINITE') {

			$ang = 90;

		} else {

			$ang = atan ($slope);

			$ang = ($ang * 180)/pi();

		}



		$arrang1 = ($ang - $arrang);

		$arrang1 = ($arrang1*pi())/180;

		$arrang2 = ($ang + $arrang);

		$arrang2 = ($arrang2*pi())/180;



		$arx1 = (floor(cos($arrang1)*$arrhead));

		$ary1 = (floor(sin($arrang1)*$arrhead));

		$arx2 = (floor(cos($arrang2)*$arrhead));

		$ary2 = (floor(sin($arrang2)*$arrhead));



		if ($ang==0) {

			if ($x2>$x1) {

				$arx1=$x2-$arx1;$ary1=$y2-$ary1;$arx2=$x2-$arx2;$ary2=$y2-$ary2;

			}elseif ($x2<$x1) {

				$arx1=$x2+$arx1;$ary1=$y2-$ary1;$arx2=$x2+$arx2;$ary2=$y2-$ary2;

			}

		}



		if ($ang>0&&$ang<90) {

			if (($x2>$x1)&&($y2<$y1)) {

				$arx1=$x2-$arx1;$ary1=$y2+$ary1;$arx2=$x2-$arx2;$ary2=$y2+$ary2;

			}elseif (($x2<$x1)&&($y2>$y1)) {

				$arx1=$x2+$arx1;$ary1=$y2-$ary1;$arx2=$x2+$arx2;$ary2=$y2-$ary2;

			}

		}



		if ($ang==90) {

			if (($y2>$y1)) {

				$arx1=$x2-$arx1;$ary1=$y2-$ary1;$arx2=$x2-$arx2;$ary2=$y2-$ary2;

			}elseif (($y2<$y1)) {

				$arx1=$x2-$arx1;$ary1=$y2+$ary1;$arx2=$x2-$arx2;$ary2=$y2+$ary2;

			}

		}



		if ($ang>-90&&$ang<0) {

			if (($x2>$x1)&&($y2>$y1)) {

				$arx1=$x2-$arx1;$ary1=$y2+$ary1;$arx2=$x2-$arx2;$ary2=$y2+$ary2;

			}elseif (($x2<$x1)&&($y2<$y1)) {

				$arx1=$x2+$arx1;$ary1=$y2-$ary1;$arx2=$x2+$arx2;$ary2=$y2-$ary2;

			}

		}



		$array_arrows=array('x1'=>$arx1,'y1'=>$ary1,'x2'=>$arx2,'y2'=>$ary2);



		return $array_arrows;

	}



	function showGraph($show = true) {

		if ($this->mode=='image') {

			if ($show === true) {

				if (!$this->getProp("noheader",false)) {

					header('Content-type: image/'.$this->getProp('imagetype','png'));

				}



				switch ($this->getProp("imagetype","png")){

				case 'png':

					imagepng($this->img);



					break;

				case 'jpeg':

					imagejpeg($this->img);



					break;

				case 'gif':

					imagegif ($this->img);



					break;

				default:

					$this->error('imagetype not understood.');

				}



				return true;

			}elseif ($show == "random" || $show === false) {

				$name = $this->getProp("imagepre","")."graphImage".($show=="random"?rand(1000000,10000000):"").'.'.$this->getProp('imagetype','png');



				switch ($this->getProp("imagetype","png")) {

				case 'png':

					imagepng($this->img,$name);



					break;

				case 'jpeg':

					imagejpeg($this->img,$name);



	…