/Classes/PHPExcel/Chart/Renderer/jpgraph.php

<?php



/**

 * PHPExcel

 *

 * Copyright (c) 2006 - 2012 PHPExcel

 *

 * This library 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 library 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

 *

 * @category	PHPExcel

 * @package		PHPExcel_Chart

 * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

 * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

 * @version		##VERSION##, ##DATE##

 */





require_once(PHPExcel_Settings::getChartRendererPath().'/jpgraph.php');





/**

 * PHPExcel_Chart_Renderer_jpgraph

 *

 * @category	PHPExcel

 * @package		PHPExcel_Chart_Renderer

 * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

 */

class PHPExcel_Chart_Renderer_jpgraph

{

	private static $_width	= 640;



	private static $_height	= 480;



	private static $_colourSet = array( 'mediumpurple1',	'palegreen3',	'gold1',		'cadetblue1',

										'darkmagenta',		'coral',		'dodgerblue3',	'eggplant',

										'mediumblue',		'magenta',		'sandybrown',	'cyan',

										'firebrick1',		'forestgreen',	'deeppink4',	'darkolivegreen',

										'goldenrod2'

									  );



	private static $_markSet = array(	'diamond'	=> MARK_DIAMOND,

										'square'	=> MARK_SQUARE,

										'triangle'	=> MARK_UTRIANGLE,

										'x'			=> MARK_X,

										'star'		=> MARK_STAR,

										'dot'		=> MARK_FILLEDCIRCLE,

										'dash'		=> MARK_DTRIANGLE,

										'circle'	=> MARK_CIRCLE,

										'plus'		=> MARK_CROSS

									);





	private $_chart	= null;



	private $_graph	= null;



	private static $_plotColour	= 0;



	private static $_plotMark	= 0;





	private function _formatPointMarker($seriesPlot,$markerID) {

		$plotMarkKeys = array_keys(self::$_markSet);

		if (is_null($markerID)) {

			//	Use default plot marker (next marker in the series)

			self::$_plotMark %= count(self::$_markSet);

			$seriesPlot->mark->SetType(self::$_markSet[$plotMarkKeys[self::$_plotMark++]]);

		} elseif ($markerID !== 'none') {

			//	Use specified plot marker (if it exists)

			if (isset(self::$_markSet[$markerID])) {

				$seriesPlot->mark->SetType(self::$_markSet[$markerID]);

			} else {

				//	If the specified plot marker doesn't exist, use default plot marker (next marker in the series)

				self::$_plotMark %= count(self::$_markSet);

				$seriesPlot->mark->SetType(self::$_markSet[$plotMarkKeys[self::$_plotMark++]]);

			}

		} else {

			//	Hide plot marker

			$seriesPlot->mark->Hide();

		}

		$seriesPlot->mark->SetColor(self::$_colourSet[self::$_plotColour]);

		$seriesPlot->mark->SetFillColor(self::$_colourSet[self::$_plotColour]);

		$seriesPlot->SetColor(self::$_colourSet[self::$_plotColour++]);



		return $seriesPlot;

	}	//	function _formatPointMarker()





	private function _formatDataSetLabels($groupID, $datasetLabels, $labelCount, $rotation = '') {

		$datasetLabelFormatCode = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getFormatCode();

		if (!is_null($datasetLabelFormatCode)) {

			//	Retrieve any label formatting code

			$datasetLabelFormatCode = stripslashes($datasetLabelFormatCode);

		}



		$testCurrentIndex = 0;

		foreach($datasetLabels as $i => $datasetLabel) {

			if (is_array($datasetLabel)) {

				if ($rotation == 'bar') {

					$datasetLabels[$i] = implode(" ",$datasetLabel);

				} else {

					$datasetLabel = array_reverse($datasetLabel);

					$datasetLabels[$i] = implode("\n",$datasetLabel);

				}

			} else {

				//	Format labels according to any formatting code

				if (!is_null($datasetLabelFormatCode)) {

					$datasetLabels[$i] = PHPExcel_Style_NumberFormat::toFormattedString($datasetLabel,$datasetLabelFormatCode);

				}

			}

			++$testCurrentIndex;

		}



		return $datasetLabels;

	}	//	function _formatDataSetLabels()





	private function _percentageSumCalculation($groupID,$seriesCount) {

		//	Adjust our values to a percentage value across all series in the group

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

			if ($i == 0) {

				$sumValues = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();

			} else {

				$nextValues = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();

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

					if (isset($sumValues[$k])) {

						$sumValues[$k] += $value;

					} else {

						$sumValues[$k] = $value;

					}

				}

			}

		}



		return $sumValues;

	}	//	function _percentageSumCalculation()





	private function _percentageAdjustValues($dataValues,$sumValues) {

		foreach($dataValues as $k => $dataValue) {

			$dataValues[$k] = $dataValue / $sumValues[$k] * 100;

		}



		return $dataValues;

	}	//	function _percentageAdjustValues()





	private function _getCaption($captionElement) {

		//	Read any caption

		$caption = (!is_null($captionElement)) ? $captionElement->getCaption() : NULL;

		//	Test if we have a title caption to display

		if (!is_null($caption)) {

			//	If we do, it could be a plain string or an array

			if (is_array($caption)) {

				//	Implode an array to a plain string

				$caption = implode('',$caption);

			}

		}

		return $caption;

	}	//	function _getCaption()





	private function _renderTitle() {

		$title = $this->_getCaption($this->_chart->getTitle());

		if (!is_null($title)) {

			$this->_graph->title->Set($title);

		}

	}	//	function _renderTitle()





	private function _renderLegend() {

		$legend = $this->_chart->getLegend();

		if (!is_null($legend)) {

			$legendPosition = $legend->getPosition();

			$legendOverlay = $legend->getOverlay();

			switch ($legendPosition) {

				case 'r'	:

					$this->_graph->legend->SetPos(0.01,0.5,'right','center');	//	right

					$this->_graph->legend->SetColumns(1);

					break;

				case 'l'	:

					$this->_graph->legend->SetPos(0.01,0.5,'left','center');	//	left

					$this->_graph->legend->SetColumns(1);

					break;

				case 't'	:

					$this->_graph->legend->SetPos(0.5,0.01,'center','top');	//	top

					break;

				case 'b'	:

					$this->_graph->legend->SetPos(0.5,0.99,'center','bottom');	//	bottom

					break;

				default		:

					$this->_graph->legend->SetPos(0.01,0.01,'right','top');	//	top-right

					$this->_graph->legend->SetColumns(1);

					break;

			}

		} else {

			$this->_graph->legend->Hide();

		}

	}	//	function _renderLegend()





	private function _renderCartesianPlotArea($type='textlin') {

		$this->_graph = new Graph(self::$_width,self::$_height);

		$this->_graph->SetScale($type);



		$this->_renderTitle();



		//	Rotate for bar rather than column chart

		$rotation = $this->_chart->getPlotArea()->getPlotGroupByIndex(0)->getPlotDirection();

		$reverse = ($rotation == 'bar') ? true : false;



		$xAxisLabel = $this->_chart->getXAxisLabel();

		if (!is_null($xAxisLabel)) {

			$title = $this->_getCaption($xAxisLabel);

			if (!is_null($title)) {

				$this->_graph->xaxis->SetTitle($title,'center');

				$this->_graph->xaxis->title->SetMargin(35);

				if ($reverse) {

					$this->_graph->xaxis->title->SetAngle(90);

					$this->_graph->xaxis->title->SetMargin(90);

				}

			}

		}



		$yAxisLabel = $this->_chart->getYAxisLabel();

		if (!is_null($yAxisLabel)) {

			$title = $this->_getCaption($yAxisLabel);

			if (!is_null($title)) {

				$this->_graph->yaxis->SetTitle($title,'center');

				if ($reverse) {

					$this->_graph->yaxis->title->SetAngle(0);

					$this->_graph->yaxis->title->SetMargin(-55);

				}

			}

		}

	}	//	function _renderCartesianPlotArea()





	private function _renderPiePlotArea($doughnut = False) {

		$this->_graph = new PieGraph(self::$_width,self::$_height);



		$this->_renderTitle();

	}	//	function _renderPiePlotArea()





	private function _renderRadarPlotArea() {

		$this->_graph = new RadarGraph(self::$_width,self::$_height);

		$this->_graph->SetScale('lin');



		$this->_renderTitle();

	}	//	function _renderRadarPlotArea()





	private function _renderPlotLine($groupID, $filled = false, $combination = false, $dimensions = '2d') {

		$grouping = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();



        $labelCount = count($this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount());

		if ($labelCount > 0) {

			$datasetLabels = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();

			$datasetLabels = $this->_formatDataSetLabels($groupID, $datasetLabels, $labelCount);

			$this->_graph->xaxis->SetTickLabels($datasetLabels);

		}



		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();

		$seriesPlots = array();

		if ($grouping == 'percentStacked') {

			$sumValues = $this->_percentageSumCalculation($groupID,$seriesCount);

		}



		//	Loop through each data series in turn

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

			$dataValues = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();

			$marker = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getPointMarker();



			if ($grouping == 'percentStacked') {

				$dataValues = $this->_percentageAdjustValues($dataValues,$sumValues);

			}



			//	Fill in any missing values in the $dataValues array

			$testCurrentIndex = 0;

			foreach($dataValues as $k => $dataValue) {

				while($k != $testCurrentIndex) {

					$dataValues[$testCurrentIndex] = null;

					++$testCurrentIndex;

				}

				++$testCurrentIndex;

			}



			$seriesPlot = new LinePlot($dataValues);

			if ($combination) {

				$seriesPlot->SetBarCenter();

			}



			if ($filled) {

				$seriesPlot->SetFilled(true);

				$seriesPlot->SetColor('black');

				$seriesPlot->SetFillColor(self::$_colourSet[self::$_plotColour++]);

			} else {

				//	Set the appropriate plot marker

				$this->_formatPointMarker($seriesPlot,$marker);

			}

			$dataLabel = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($i)->getDataValue();

			$seriesPlot->SetLegend($dataLabel);



			$seriesPlots[] = $seriesPlot;

		}



		if ($grouping == 'standard') {

			$groupPlot = $seriesPlots;

		} else {

			$groupPlot = new AccLinePlot($seriesPlots);

		}

		$this->_graph->Add($groupPlot);

	}	//	function _renderPlotLine()





	private function _renderPlotBar($groupID, $dimensions = '2d') {

		$rotation = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotDirection();

		//	Rotate for bar rather than column chart

		if (($groupID == 0) && ($rotation == 'bar')) {

			$this->_graph->Set90AndMargin();

		}

		$grouping = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();



        $labelCount = count($this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount());

		if ($labelCount > 0) {

			$datasetLabels = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();

			$datasetLabels = $this->_formatDataSetLabels($groupID, $datasetLabels, $labelCount, $rotation);

			//	Rotate for bar rather than column chart

			if ($rotation == 'bar') {

				$datasetLabels = array_reverse($datasetLabels);

				$this->_graph->yaxis->SetPos('max');

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

				$this->_graph->yaxis->SetLabelSide(SIDE_RIGHT);

			}

			$this->_graph->xaxis->SetTickLabels($datasetLabels);

		}





		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();

		$seriesPlots = array();

		if ($grouping == 'percentStacked') {

			$sumValues = $this->_percentageSumCalculation($groupID,$seriesCount);

		}



		//	Loop through each data series in turn

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

			$dataValues = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($j)->getDataValues();

			if ($grouping == 'percentStacked') {

				$dataValues = $this->_percentageAdjustValues($dataValues,$sumValues);

			}



			//	Fill in any missing values in the $dataValues array

			$testCurrentIndex = 0;

			foreach($dataValues as $k => $dataValue) {

				while($k != $testCurrentIndex) {

					$dataValues[$testCurrentIndex] = null;

					++$testCurrentIndex;

				}

				++$testCurrentIndex;

			}



			//	Reverse the $dataValues order for bar rather than column chart

			if ($rotation == 'bar') {

				$dataValues = array_reverse($dataValues);

			}

			$seriesPlot = new BarPlot($dataValues);

			$seriesPlot->SetColor('black');

			$seriesPlot->SetFillColor(self::$_colourSet[self::$_plotColour++]);

			if ($dimensions == '3d') {

				$seriesPlot->SetShadow();

			}

			if (!$this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($j)) {

				$dataLabel = '';

			} else {

				$dataLabel = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($j)->getDataValue();

			}

			$seriesPlot->SetLegend($dataLabel);



			$seriesPlots[] = $seriesPlot;

		}

		//	Reverse the plot order for bar rather than column chart

		if (($rotation == 'bar') && (!($grouping == 'percentStacked'))) {

			$seriesPlots = array_reverse($seriesPlots);

		}



		if ($grouping == 'clustered') {

			$groupPlot = new GroupBarPlot($seriesPlots);

		} elseif ($grouping == 'standard') {

			$groupPlot = new GroupBarPlot($seriesPlots);

		} else {

			$groupPlot = new AccBarPlot($seriesPlots);

			if ($dimensions == '3d') {

				$groupPlot->SetShadow();

			}

		}



		$this->_graph->Add($groupPlot);

	}	//	function _renderPlotBar()





	private function _renderPlotScatter($groupID,$bubble) {

		$grouping = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();

		$scatterStyle = $bubbleSize = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();



		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();

		$seriesPlots = array();



		//	Loop through each data series in turn

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

			$dataValuesY = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex($i)->getDataValues();

			$dataValuesX = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();



			foreach($dataValuesY as $k => $dataValueY) {

				$dataValuesY[$k] = $k;

			}



			$seriesPlot = new ScatterPlot($dataValuesX,$dataValuesY);

			if ($scatterStyle == 'lineMarker') {

				$seriesPlot->SetLinkPoints();

				$seriesPlot->link->SetColor(self::$_colourSet[self::$_plotColour]);

			} elseif ($scatterStyle == 'smoothMarker') {

				$spline = new Spline($dataValuesY,$dataValuesX);

				list($splineDataY,$splineDataX) = $spline->Get(count($dataValuesX) * self::$_width / 20);

				$lplot = new LinePlot($splineDataX,$splineDataY);

				$lplot->SetColor(self::$_colourSet[self::$_plotColour]);



				$this->_graph->Add($lplot);

			}



			if ($bubble) {

				$this->_formatPointMarker($seriesPlot,'dot');

				$seriesPlot->mark->SetColor('black');

				$seriesPlot->mark->SetSize($bubbleSize);

			} else {

				$marker = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getPointMarker();

				$this->_formatPointMarker($seriesPlot,$marker);

			}

			$dataLabel = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($i)->getDataValue();

			$seriesPlot->SetLegend($dataLabel);



			$this->_graph->Add($seriesPlot);

		}

	}	//	function _renderPlotScatter()





	private function _renderPlotRadar($groupID) {

		$radarStyle = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();



		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();

		$seriesPlots = array();



		//	Loop through each data series in turn

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

			$dataValuesY = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex($i)->getDataValues();

			$dataValuesX = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();

			$marker = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getPointMarker();



			$dataValues = array();

			foreach($dataValuesY as $k => $dataValueY) {

				$dataValues[$k] = implode(' ',array_reverse($dataValueY));

			}

			$tmp = array_shift($dataValues);

			$dataValues[] = $tmp;

			$tmp = array_shift($dataValuesX);

			$dataValuesX[] = $tmp;



			$this->_graph->SetTitles(array_reverse($dataValues));



			$seriesPlot = new RadarPlot(array_reverse($dataValuesX));



			$dataLabel = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($i)->getDataValue();

			$seriesPlot->SetColor(self::$_colourSet[self::$_plotColour++]);

			if ($radarStyle == 'filled') {

				$seriesPlot->SetFillColor(self::$_colourSet[self::$_plotColour]);

			}

			$this->_formatPointMarker($seriesPlot,$marker);

			$seriesPlot->SetLegend($dataLabel);



			$this->_graph->Add($seriesPlot);

		}

	}	//	function _renderPlotRadar()





	private function _renderPlotContour($groupID) {

		$contourStyle = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();



		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();

		$seriesPlots = array();



		$dataValues = array();

		//	Loop through each data series in turn

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

			$dataValuesY = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex($i)->getDataValues();

			$dataValuesX = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();



			$dataValues[$i] = $dataValuesX;

		}

		$seriesPlot = new ContourPlot($dataValues);



		$this->_graph->Add($seriesPlot);

	}	//	function _renderPlotContour()





	private function _renderPlotStock($groupID) {

		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();

		$plotOrder = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotOrder();

		$seriesPlots = array();



		$dataValues = array();

		//	Loop through each data series in turn

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

			$dataValuesY = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex($i)->getDataValues();

			$dataValuesX = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();



			foreach($dataValuesX as $j => $dataValueX)

			$dataValues[$j][$plotOrder[$i]] = $dataValueX;

		}



		$seriesPlot = new StockPlot($dataValues);



		$this->_graph->Add($seriesPlot);

	}	//	function _renderPlotStock()





	private function _renderAreaChart($groupCount, $dimensions = '2d') {

		require_once('jpgraph_line.php');



		$this->_renderCartesianPlotArea();



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

			$this->_renderPlotLine($i,True,False,$dimensions);

		}

	}	//	function _renderAreaChart()





	private function _renderLineChart($groupCount, $dimensions = '2d') {

		require_once('jpgraph_line.php');



		$this->_renderCartesianPlotArea();



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

			$this->_renderPlotLine($i,False,False,$dimensions);

		}

	}	//	function _renderLineChart()





	private function _renderBarChart($groupCount, $dimensions = '2d') {

		require_once('jpgraph_bar.php');



		$this->_renderCartesianPlotArea();



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

			$this->_renderPlotBar($i,$dimensions);

		}

	}	//	function _renderBarChart()





	private function _renderScatterChart($groupCount) {

		require_once('jpgraph_scatter.php');

		require_once('jpgraph_regstat.php');

		require_once('jpgraph_line.php');



		$this->_renderCartesianPlotArea('linlin');



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

			$this->_renderPlotScatter($i,false);

		}

	}	//	function _renderScatterChart()





	private function _renderBubbleChart($groupCount) {

		require_once('jpgraph_scatter.php');



		$this->_renderCartesianPlotArea('linlin');



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

			$this->_renderPlotScatter($i,true);

		}

	}	//	function _renderBubbleChart()





	private function _renderPieChart($groupCount, $dimensions = '2d', $doughnut = False, $multiplePlots = False) {

		require_once('jpgraph_pie.php');

		if ($dimensions == '3d') {

			require_once('jpgraph_pie3d.php');

		}



		$this->_renderPiePlotArea($doughnut);



		$iLimit = ($multiplePlots) ? $groupCount : 1;

		for($groupID = 0; $groupID < $iLimit; ++$groupID) {

			$grouping = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();

			$exploded = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();

			if ($groupID == 0) {

		        $labelCount = count($this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount());

				if ($labelCount > 0) {

					$datasetLabels = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();

					$datasetLabels = $this->_formatDataSetLabels($groupID, $datasetLabels, $labelCount);

				}

			}



			$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();

			$seriesPlots = array();

			//	For pie charts, we only display the first series: doughnut charts generally display all series

			$jLimit = ($multiplePlots) ? $seriesCount : 1;

			//	Loop through each data series in turn

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

				$dataValues = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($j)->getDataValues();



				//	Fill in any missing values in the $dataValues array

				$testCurrentIndex = 0;

				foreach($dataValues as $k => $dataValue) {

					while($k != $testCurrentIndex) {

						$dataValues[$testCurrentIndex] = null;

						++$testCurrentIndex;

					}

					++$testCurrentIndex;

				}



				if ($dimensions == '3d') {

					$seriesPlot = new PiePlot3D($dataValues);

				} else {

					if ($doughnut) {

						$seriesPlot = new PiePlotC($dataValues);

					} else {

						$seriesPlot = new PiePlot($dataValues);

					}

				}



				if ($multiplePlots) {

					$seriesPlot->SetSize(($jLimit-$j) / ($jLimit * 4));

				}



				if ($doughnut) {

					$seriesPlot->SetMidColor('white');

				}



				$seriesPlot->SetColor(self::$_colourSet[self::$_plotColour++]);

				if (count($datasetLabels) > 0)

					$seriesPlot->SetLabels(array_fill(0,count($datasetLabels),''));

				if ($dimensions != '3d') {

					$seriesPlot->SetGuideLines(false);

				}

				if ($j == 0) {

					if ($exploded) {

						$seriesPlot->ExplodeAll();

					}

					$seriesPlot->SetLegends($datasetLabels);

				}



				$this->_graph->Add($seriesPlot);

			}

		}

	}	//	function _renderPieChart()





	private function _renderRadarChart($groupCount) {

		require_once('jpgraph_radar.php');



		$this->_renderRadarPlotArea();



		for($groupID = 0; $groupID < $groupCount; ++$groupID) {

			$this->_renderPlotRadar($groupID);

		}

	}	//	function _renderRadarChart()





	private function _renderStockChart($groupCount) {

		require_once('jpgraph_stock.php');



		$this->_renderCartesianPlotArea();



		for($groupID = 0; $groupID < $groupCount; ++$i) {

			$this->_renderPlotStock($groupID);

		}

	}	//	function _renderStockChart()





	private function _renderContourChart($groupCount,$dimensions) {

		require_once('jpgraph_contour.php');



		$this->_renderCartesianPlotArea('intint');



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

			$this->_renderPlotContour($i);

		}

	}	//	function _renderContourChart()





	private function _renderCombinationChart($groupCount,$dimensions,$outputDestination) {

		require_once('jpgraph_line.php');

		require_once('jpgraph_bar.php');

		require_once('jpgraph_scatter.php');

		require_once('jpgraph_regstat.php');

		require_once('jpgraph_line.php');



		$this->_renderCartesianPlotArea();



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

			$dimensions = null;

			$chartType = $this->_chart->getPlotArea()->getPlotGroupByIndex($i)->getPlotType();

			switch ($chartType) {

				case 'area3DChart' :

					$dimensions = '3d';

				case 'areaChart' :

					$this->_renderPlotLine($i,True,True,$dimensions);

					break;

				case 'bar3DChart' :

					$dimensions = '3d';

				case 'barChart' :

					$this->_renderPlotBar($i,$dimensions);

					break;

				case 'line3DChart' :

					$dimensions = '3d';

				case 'lineChart' :

					$this->_renderPlotLine($i,False,True,$dimensions);

					break;

				case 'scatterChart' :

					$this->_renderPlotScatter($i,false);

					break;

				case 'bubbleChart' :

					$this->_renderPlotScatter($i,true);

					break;

				default	:

					$this->_graph = null;

					return false;

			}

		}



		$this->_renderLegend();



		$this->_graph->Stroke($outputDestination);

		return true;

	}	//	function _renderCombinationChart()





	public function render($outputDestination) {

        self::$_plotColour = 0;



		$groupCount = $this->_chart->getPlotArea()->getPlotGroupCount();



		$dimensions = null;

		if ($groupCount == 1) {

			$chartType = $this->_chart->getPlotArea()->getPlotGroupByIndex(0)->getPlotType();

		} else {

			$chartTypes = array();

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

				$chartTypes[] = $this->_chart->getPlotArea()->getPlotGroupByIndex($i)->getPlotType();

			}

			$chartTypes = array_unique($chartTypes);

			if (count($chartTypes) == 1) {

				$chartType = array_pop($chartTypes);

			} elseif (count($chartTypes) == 0) {

				echo 'Chart is not yet implemented<br />';

				return false;

			} else {

				return $this->_renderCombinationChart($groupCount,$dimensions,$outputDestination);

			}

		}



		switch ($chartType) {

			case 'area3DChart' :

				$dimensions = '3d';

			case 'areaChart' :

				$this->_renderAreaChart($groupCount,$dimensions);

				break;

			case 'bar3DChart' :

				$dimensions = '3d';

			case 'barChart' :

				$this->_renderBarChart($groupCount,$dimensions);

				break;

			case 'line3DChart' :

				$dimensions = '3d';

			case 'lineChart' :

				$this->_renderLineChart($groupCount,$dimensions);

				break;

			case 'pie3DChart' :

				$dimensions = '3d';

			case 'pieChart' :

				$this->_renderPieChart($groupCount,$dimensions,False,False);

				break;

			case 'doughnut3DChart' :

				$dimensions = '3d';

			case 'doughnutChart' :

				$this->_renderPieChart($groupCount,$dimensions,True,True);

				break;

			case 'scatterChart' :

				$this->_renderScatterChart($groupCount);

				break;

			case 'bubbleChart' :

				$this->_renderBubbleChart($groupCount);

				break;

			case 'radarChart' :

				$this->_renderRadarChart($groupCount);

				break;

			case 'surface3DChart' :

				$dimensions = '3d';

			case 'surfaceChart' :

				$this->_renderContourChart($groupCount,$dimensions);

				break;

			case 'stockChart' :

				$this->_renderStockChart($groupCount,$dimensions);

				break;

			default	:

				echo $chartType.' is not yet implemented<br />';

				return false;

		}

		$this->_renderLegend();



		$this->_graph->Stroke($outputDestination);

		return true;

	}	//	function render()





	/**

	 * Create a new PHPExcel_Chart_Renderer_jpgraph

	 */

	public function __construct(PHPExcel_Chart $chart)

	{

		$this->_graph	= null;

		$this->_chart	= $chart;

	}	//	function __construct()



}	//	PHPExcel_Chart_Renderer_jpgraph