This function allows you to add PNG pictures to your charts. If you turn on shadow support before calling this function, the merged picture will be drawn with the specified shadow parameters.

drawFromPNG($X,$Y,$FileName);

Where :

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

 /* Create the pChart object */
 $myPicture = new pImage(700,230);
 $myPicture->drawGradientArea(0,0,700,230,DIRECTION_VERTICAL,array("StartR"=>180,"StartG"=>193,"StartB"=>91,"EndR"=>120,"EndG"=>137,"EndB"=>72,"Alpha"=>100));
 $myPicture->drawGradientArea(0,0,700,230,DIRECTION_HORIZONTAL,array("StartR"=>180,"StartG"=>193,"StartB"=>91,"EndR"=>120,"EndG"=>137,"EndB"=>72,"Alpha"=>20));
 $myPicture->drawGradientArea(0,0,700,20,DIRECTION_VERTICAL,array("StartR"=>0,"StartG"=>0,"StartB"=>0,"EndR"=>50,"EndG"=>50,"EndB"=>50,"Alpha"=>100));

 /* Add a border to the picture */
 $myPicture->drawRectangle(0,0,699,229,array("R"=>0,"G"=>0,"B"=>0));
 
 /* Write the picture title */ 
 $myPicture->setFontProperties(array("FontName"=>"../fonts/Silkscreen.ttf","FontSize"=>6));
 $myPicture->drawText(10,13,"drawFromPNG() - add pictures to your charts",array("R"=>255,"G"=>255,"B"=>255));

 /* Turn off shadow computing */ 
 $myPicture->setShadow(FALSE);

 /* Draw a PNG object */
 $myPicture->drawFromPNG(180,50,"resources/hologram.png");

 /* Turn on shadow computing */ 
 $myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>20));

 /* Draw a PNG object */
 $myPicture->drawFromPNG(400,50,"resources/blocnote.png");

 /* Write the legend */
 $myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>20));
 $TextSettings = array("R"=>255,"G"=>255,"B"=>255,"FontSize"=>10,"FontName"=>"../fonts/calibri.ttf","Align"=>TEXT_ALIGN_BOTTOMMIDDLE);
 $myPicture->drawText(240,190,"          Without shadow
(only PNG alpha channels)",$TextSettings);
 $myPicture->drawText(460,200,"With enhanced shadow",$TextSettings);

 /* Render the picture (choose the best way) */
 $myPicture->autoOutput("pictures/example.drawFromPNG.png");

This will draw two pictures, the first one with only alpha channels included in the PNG file (that may contains a shadow effect!!) and the second one with the internal pChart shadow algorithm.