This function allows you to draw a spline chart. All the drawing parameters are given trough a $Format array. To learn more about this please read the Format array guide.

drawSplineChart($Format="");

Where :




It is possible to customize the spline chart rendering by playing with this array. Providing a detailled configuration is not mandatory.


You can define if the labels color will be the same than the serie color of if you want to force it manually setting DisplayColor to :




By default, the chart will break everytime a VOID value will be found. If you want to draw a straight line between the missing points then you can set the BreakVoid parameter to FALSE. If you don‘t set a custom color, the serie color will be used. The missing values rendering parameters can be tuned with :

 /* Build a dataset */
 $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->setSerieTicks("Probe 2",4);
 $MyData->setAxisName(0,"Temperatures");
 $MyData->addPoints(array("Jan","Feb","Mar","Apr","May","Jun"),"Labels");
 $MyData->setSerieDescription("Labels","Months");
 $MyData->setAbscissa("Labels");

 /* Create the 1st chart*/
 $myPicture->setGraphArea(60,60,450,190);
 $myPicture->drawFilledRectangle(60,60,450,190,array("R"=>255,"G"=>255,"B"=>255,"Surrounding"=>-200,"Alpha"=>10));
 $myPicture->drawScale(array("DrawSubTicks"=>TRUE));
 $myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>10));
 $myPicture->setFontProperties(array("FontName"=>"fonts/pf_arma_five.ttf","FontSize"=>6));
 $myPicture->drawSplineChart(array("DisplayValues"=>TRUE,"DisplayColor"=>DISPLAY_AUTO));
 $myPicture->setShadow(FALSE);

 /* Create the 2nd chart */
 $myPicture->setGraphArea(500,60,670,190);
 $myPicture->drawFilledRectangle(500,60,670,190,array("R"=>255,"G"=>255,"B"=>255,"Surrounding"=>-200,"Alpha"=>10));
 $myPicture->drawScale(array("Pos"=>SCALE_POS_TOPBOTTOM,"DrawSubTicks"=>TRUE));
 $myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>10));
 $myPicture->drawSplineChart();
 $myPicture->setShadow(FALSE);

 /* Write the legend*/
 $myPicture->drawLegend(510,205,array("Style"=>LEGEND_NOBORDER,"Mode"=>LEGEND_HORIZONTAL));