public static function test()
   {
      $MyData = new pData(); 
      
       //data for intervals 0-10,10-20,20-30 ... 100-x
       $MyData->addPoints(array(0,0,10,12,9,6,4,1,0,0,VOID),"Data");
      
       $MyData->setAxisName(0,"Data");
       $MyData->addPoints(array('0','10','20','30','40','50','60','70','80','90','100'),"Intervals1");
       $MyData->setSerieDescription("Intervals1","Intervals");
       $MyData->setAbscissa("Intervals1");
      $MyData->setAbscissaName("Intervals");
       /* Create the pChart object */
       $myPicture = new pImage(700,230,$MyData);
      
       /* Turn of AAliasing */
       $myPicture->Antialias = FALSE;
      
       /* Draw the border */
       $myPicture->drawRectangle(0,0,699,229,array("R"=>0,"G"=>0,"B"=>0));
      
       $myPicture->setFontProperties(array("FontName"=> sfConfig::get('sf_lib_dir')."/pchart/fonts/".self::$fontname,"FontSize"=>10));
      
       /* Define the chart area */
       $myPicture->setGraphArea(60,30,650,190);
      
       /* Draw the scale */
       $scaleSettings = array("XMargin"=>0,"YMargin"=>0, "Mode" => SCALE_MODE_START0);
       $myPicture->drawScale($scaleSettings);
      
       /* Draw the step chart */
       $myPicture->drawFilledStepChart();       
      
       /* Render the picture (choose the best way) */
      
       $filename = 'histogram'.time().'.png';
       $myPicture->render(self::getUploadsDir('/').$filename);
       self::echoImageTag($filename, 700, 230);    
   }