This example shows how to activate and redirect error reporting by calling the ReportWarnings function. Specifying "GD" as output will redirect all the warning on the rendered picture (red box).The Y axis caption is set using the SetYAxisName function. In this example error message are generated because Serie2 has no description set. To correct this, pChart is setting the description to the serie ID : "Serie2". To avoid this message simply add a $DataSet->SetSerieName("Serie Name","Serie2"); call.


Output :


Source code :

 <?php
  // Standard inclusions   
  include("pChart/pData.class");
  include("pChart/pChart.class");

  // Dataset definition 
  $DataSet = new pData;
  $DataSet->AddPoint(array(10,4,3,2,3,3,2,1,0,7,4,3,2,3,3,5,1,0,7),"Serie1");
  $DataSet->AddPoint(array(1,4,2,6,2,3,0,1,-5,1,2,4,5,2,1,0,6,4,30),"Serie2");
  $DataSet->AddAllSeries();
  $DataSet->SetAbsciseLabelSerie();
  $DataSet->SetXAxisName("Samples");
  $DataSet->SetYAxisName("Temperature");
  $DataSet->SetSerieName("January","Serie1");

  // Initialise the graph
  $Test = new pChart(700,230);
  $Test->reportWarnings("GD");
  $Test->setFontProperties("Fonts/tahoma.ttf",8);
  $Test->setGraphArea(60,30,585,185);
  $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 cubic curve graph
  $Test->drawCubicCurve($DataSet->GetData(),$DataSet->GetDataDescription());

  // 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 19",50,50,50,585);
  $Test->Render("example19.png");  
 ?>
 

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