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Language Reference » Surface charts » setGrid
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setGrid - Define the size of the matrix This function allows you to define the size of the matrix used for the surface chart. Calling this function
setGrid($XSize=10,$YSize=10)Where : XSize is the width of the matrix.
YSize is the height of the matrix. Sample script 
/* pChart library inclusions */
include("../class/pData.class.php");
include("../class/pDraw.class.php");
include("../class/pImage.class.php");
include("../class/pSurface.class.php");
/* Create the pChart object */
$myPicture = new pImage(210,100);
/* Create a solid background */
$Settings = array("R"=>179, "G"=>217, "B"=>91, "Dash"=>1, "DashR"=>199, "DashG"=>237, "DashB"=>111);
$myPicture->drawFilledRectangle(0,0,210,100,$Settings);
/* Do a gradient overlay */
$Settings = array("StartR"=>194, "StartG"=>231, "StartB"=>44, "EndR"=>43, "EndG"=>107, "EndB"=>58, "Alpha"=>50);
$myPicture->drawGradientArea(0,0,210,100,DIRECTION_VERTICAL,$Settings);
$myPicture->drawGradientArea(0,0,210,20,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(0,0,209,99,array("R"=>0,"G"=>0,"B"=>0));
/* Write the picture title */
$myPicture->setFontProperties(array("FontName"=>"../fonts/Silkscreen.ttf","FontSize"=>6));
$myPicture->drawText(10,13,"pSurface() :: Surface charts",array("R"=>255,"G"=>255,"B"=>255));
/* Define the charting area */
$myPicture->setGraphArea(50,60,180,80);
$myPicture->drawFilledRectangle(50,60,180,80,array("R"=>255,"G"=>255,"B"=>255,"Surrounding"=>-200,"Alpha"=>20));
$myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1));
/* Create the surface object */
$mySurface = new pSurface($myPicture);
/* Set the grid size */
$mySurface->setGrid(9,1);
/* Write the axis labels */
$myPicture->setFontProperties(array("FontName"=>"../fonts/pf_arma_five.ttf","FontSize"=>6));
$myPicture->setFontProperties(array("FontName"=>"../fonts/Bedizen.ttf","FontSize"=>7));
$mySurface->writeXLabels(array("Angle"=>45,"Labels"=>array("Run 1","Run 2","Run 3","Run 4","Run 5","Run 6","Run 7","Run 8","Run 9","Run 10")));
$mySurface->writeYLabels(array("Labels"=>array("Probe 1","Probe 2")));
/* Add random values */
for($i=0; $i<=10; $i++) { $mySurface->addPoint($i,rand(0,1),rand(0,100)); }
/* Draw the surface chart */
$mySurface->drawSurface(array("Border"=>TRUE,"Surrounding"=>40));
/* Render the picture (choose the best way) */
$myPicture->autoOutput("pictures/example.surface.simple.png");
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