This example shows how to add labels to a chart. Data are manualy set using the AddPoint() method of the pData class. The graph function called is drawLineGraph() overlayed by a drawPlotGraph(). Two labels are added using the setLabel() function. Running this script will create a example9.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(0,70,70,0,0,70,70,0,0,70),"Serie1");
  $DataSet->AddPoint(array(0.5,2,4.5,8,12.5,18,24.5,32,40.5,50),"Serie2");

  $DataSet->AddAllSeries();
  $DataSet->SetAbsciseLabelSerie();
  $DataSet->SetSerieName("January","Serie1");
  $DataSet->SetSerieName("February","Serie2");

  // Initialise the graph
  $Test = new pChart(700,230);
  $Test->setFontProperties("Fonts/tahoma.ttf",8);
  $Test->setGraphArea(50,30,585,200);
  $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);   
  $Test->drawGrid(4,TRUE,230,230,230,50);

  // Draw the 0 line
  $Test->setFontProperties("Fonts/tahoma.ttf",6);
  $Test->drawTreshold(0,143,55,72,TRUE,TRUE);

  // Draw the line graph
  $Test->drawLineGraph($DataSet->GetData(),$DataSet->GetDataDescription());
  $Test->drawPlotGraph($DataSet->GetData(),$DataSet->GetDataDescription(),3,2,255,255,255);

  // Set labels
  $Test->setFontProperties("Fonts/tahoma.ttf",8);
  $Test->setLabel($DataSet->GetData(),$DataSet->GetDataDescription(),"Serie1","2","Daily incomes",221,230,174);
  $Test->setLabel($DataSet->GetData(),$DataSet->GetDataDescription(),"Serie2","6","Production break",239,233,195);

  // Finish the graph
  $Test->setFontProperties("Fonts/tahoma.ttf",8);
  $Test->drawLegend(600,30,$DataSet->GetDataDescription(),255,255,255);
  $Test->setFontProperties("Fonts/tahoma.ttf",10);
  $Test->drawTitle(50,22,"Example 9",50,50,50,585);
  $Test->Render("example9.png");
 ?>
 

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