Since release 1.27b it is possible to associate a picture (only GIF files are supported) to one data serie. This picture will replace the bubles while drawing a plot chart. First associate one picture to one serie calling the SetSerieSymbol function of the pData class. The title of the chart is written over the grap area using the drawTextBox function setting a transparency factor of 30%

Running this script will create a example22.png file in the current directory.

Output :


Source code :

 <?php
  // Standard inclusions
  include("pChart/pData.class");
  include("pChart/pChart.class");
  
  // Dataset definition
  $DataSet = new pData;
  $DataSet->AddPoint(array(60,70,90,110,100,90),"Serie1");
  $DataSet->AddPoint(array(40,50,60,80,70,60),"Serie2");
  $DataSet->AddPoint(array("Jan","Feb","Mar","Apr","May","Jun"),"Serie3");
  $DataSet->AddSerie("Serie1");
  $DataSet->AddSerie("Serie2");
  $DataSet->SetAbsciseLabelSerie("Serie3");
  $DataSet->SetSerieName("Company A","Serie1");
  $DataSet->SetSerieName("Company B","Serie2");
  $DataSet->SetYAxisName("Product sales");
  $DataSet->SetYAxisUnit("k");
  $DataSet->SetSerieSymbol("Serie1","Sample/Point_Asterisk.gif");
  $DataSet->SetSerieSymbol("Serie2","Sample/Point_Cd.gif");

  // Initialise the graph   
  $Test = new pChart(700,230);
  $Test->setFontProperties("Fonts/tahoma.ttf",8);
  $Test->setGraphArea(65,30,650,200);
  $Test->drawFilledRoundedRectangle(7,7,693,223,5,240,240,240);
  $Test->drawRoundedRectangle(5,5,695,225,5,230,230,230);
  $Test->drawGraphArea(255,255,255,TRUE);
  $Test->drawScale($DataSet->GetData(),$DataSet->GetDataDescription(),SCALE_NORMAL,150,150,150,TRUE,0,2,TRUE);
  $Test->drawGrid(4,TRUE,230,230,230,50);
   
  // Draw the title
  $Test->setFontProperties("Fonts/pf_arma_five.ttf",6);
  $Title = "Comparative product sales for company A & B  ";
  $Test->drawTextBox(65,30,650,45,$Title,0,255,255,255,ALIGN_RIGHT,TRUE,0,0,0,30);
  
  // Draw the line graph
  $Test->drawLineGraph($DataSet->GetData(),$DataSet->GetDataDescription());
  $Test->drawPlotGraph($DataSet->GetData(),$DataSet->GetDataDescription(),3,2,255,255,255);
  
  // Draw the legend
  $Test->setFontProperties("Fonts/tahoma.ttf",8);
  $Test->drawLegend(80,60,$DataSet->GetDataDescription(),255,255,255);
 
  // Render the chart
  $Test->Render("example22.png");
 ?>
 

If you want to send the picture directly in a browser, replace the Render() command by Stroke().