This example shows how axis formats can be modified. Here data on the Y axis are representing a number of seconds and are displayed as HH:MM:SS calling SetYAxisFormat("time"). Data on the X Axis are dated written in the unix time stamp format and are formated as DD/MM/YYY calling SetXAxisFormat("date").


Output :


Source code :

 <?php
  // Standard inclusions
  include("pChart/pData.class");
  include("pChart/pChart.class");
  
  // Dataset definition
  $DataSet = new pData;
  $DataSet->AddPoint(array(100,320,200,10,43),"Serie1");
  $DataSet->AddPoint(array(23,432,43,153,234),"Serie2");
  $DataSet->AddPoint(array(1217541600,1217628000,1217714400,1217800800,1217887200),"Serie3");
  $DataSet->AddSerie("Serie1");
  $DataSet->AddSerie("Serie2");
  $DataSet->SetAbsciseLabelSerie("Serie3");
  $DataSet->SetSerieName("Incoming","Serie1");
  $DataSet->SetSerieName("Outgoing","Serie2");
  $DataSet->SetYAxisName("Call duration");
  $DataSet->SetYAxisFormat("time");
  $DataSet->SetXAxisFormat("date");

  // Initialise the graph   
  $Test = new pChart(700,230);
  $Test->setFontProperties("Fonts/tahoma.ttf",8);
  $Test->setGraphArea(85,30,650,200);
  $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);
  $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);
  
  // Finish the graph
  $Test->setFontProperties("Fonts/tahoma.ttf",8);
  $Test->drawLegend(90,35,$DataSet->GetDataDescription(),255,255,255);
  $Test->setFontProperties("Fonts/tahoma.ttf",10);
  $Test->drawTitle(60,22,"example 17",50,50,50,585);
  $Test->Render("example17.png");
 ?>
 

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