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2208d  replaceImageMapTitle
2208d  replaceImageMapValues
2208d  createFunctionSerie
2208d  setAbsicssaPosition
2208d  negateValues
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negateValues - negate all your serie values

This function allow you to negate the specified serie values. this function is usually used when you want to reverse the X axis.

Calling this function
negateValues($SerieName);
Where :

SerieName is the name (or an array of name) of the serie(s) to negate.


Sample script


 /* pChart library inclusions */ 
 include("../class/pData.class.php"); 
 include("../class/pDraw.class.php"); 
 include("../class/pImage.class.php"); 

 /* Create and populate the pData object */ 
 $MyData = new pData();   
 $MyData->addPoints(array(4,VOID,VOID,12,8,3),"Probe 1"); 
 $MyData->addPoints(array(3,12,15,8,5,5),"Probe 2"); 
 $MyData->addPoints(array(2,7,5,18,19,22),"Probe 3"); 
 $MyData->setPalette("Probe 1",array("R"=>220,"G"=>60,"B"=>20)); 
 $MyData->setSerieTicks("Probe 2",4); 
 $MyData->setSerieWeight("Probe 3",2); 
 $MyData->setAxisName(0,"Temperatures"); 
 $MyData->addPoints(array("Jan","Feb","Mar","Apr","May","Jun"),"Labels"); 
 $MyData->setSerieDescription("Labels","Months"); 
 $MyData->setAbscissa("Labels"); 

 /* Reverse the Y axis trick */ 
 $MyData->setAbsicssaPosition(AXIS_POSITION_TOP); 
 $MyData->negateValues(array("Probe 1","Probe 2","Probe 3")); 
 $MyData->setAxisDisplay(0,AXIS_FORMAT_CUSTOM,"NegateValuesDisplay");  
 function NegateValuesDisplay($Value) { if ( $Value == VOID ) { return(VOID); } else { return(-$Value); } }
 
 /* Create the pChart object */ 
 $myPicture = new pImage(700,230,$MyData); 

 /* Turn of Antialiasing */ 
 $myPicture->Antialias = FALSE; 

 /* Draw a background */ 
 $Settings = array("R"=>190, "G"=>213, "B"=>107, "Dash"=>1, "DashR"=>210, "DashG"=>223, "DashB"=>127); 
 $myPicture->drawFilledRectangle(0,0,700,230,$Settings);  

 /* Add a border to the picture */ 
 $myPicture->drawRectangle(0,0,699,229,array("R"=>0,"G"=>0,"B"=>0)); 
  
 /* Write the chart title */  
 $myPicture->setFontProperties(array("FontName"=>"../fonts/Forgotte.ttf","FontSize"=>11));
 $myPicture->drawText(150,35,"Average temperature",array("FontSize"=>20,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
 
 /* Set the default font */ 
 $myPicture->setFontProperties(array("FontName"=>"../fonts/pf_arma_five.ttf","FontSize"=>6));
 
 /* Define the chart area */ 
 $myPicture->setGraphArea(60,60,650,220); 

 /* Draw the scale */ 
 $scaleSettings = array("XMargin"=>10,"YMargin"=>10,"Floating"=>TRUE,"GridR"=>200, "GridG"=>200,"GridB"=>200,"DrawSubTicks"=>TRUE, "CycleBackground"=>TRUE);
  $myPicture->drawScale($scaleSettings); 

 /* Turn on Antialiasing */ 
 $myPicture->Antialias = TRUE; 

 /* Draw the line chart */ 
 $myPicture->drawSplineChart(); 
 $myPicture->drawPlotChart(array("PlotBorder"=>TRUE,"BorderSize"=>1,"Surrounding"=>-60,"BorderAlpha"=>80));
 
 /* Write the chart legend */ 
 $myPicture->drawLegend(540,20,array("Style"=>LEGEND_NOBORDER,"Mode"=>LEGEND_HORIZONTAL));
 
 /* Render the picture (choose the best way) */ 
 $myPicture->autoOutput("pictures/example.drawSplineChart.simple.png"); 
Last updated on 09/09/2011 
by Jean-Damien 
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