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drawFilledStepChart - Draw a filled step chart

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

Calling this function
drawFilledStepChart($Format="");
Where :

Format is an array containing the drawing parameters of the chart.


Customisation array - Tune up your chart!

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

You can specify if the values must be written on the chart setting DisplayValues to TRUE or FALSE.
You can specify the text UP/RIGHT offset with DisplayOffset.
You can specify the labels color with DisplayR,DisplayG,DisplayB.

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 :

DISPLAY_MANUAL, color will be specified manually with DisplayR,DisplayG,DisplayB.
DISPLAY_AUTO, will use the serie color.


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(-4,2,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 pChart object */
 $myPicture = new pImage(700,230,$MyData);

 /* Draw the background */
 $Settings = array("R"=>170, "G"=>183, "B"=>87, "Dash"=>1, "DashR"=>190, "DashG"=>203, "DashB"=>107);
 $myPicture->drawFilledRectangle(0,0,700,230,$Settings);

 /* Overlay with a gradient */
 $Settings = array("StartR"=>219, "StartG"=>231, "StartB"=>139, "EndR"=>1, "EndG"=>138, "EndB"=>68, "Alpha"=>50);
 $myPicture->drawGradientArea(0,0,700,230,DIRECTION_VERTICAL,$Settings);
 $myPicture->drawGradientArea(0,0,700,20,DIRECTION_VERTICAL,array("StartR"=>0,"StartG"=>0,"StartB"=>0,"EndR"=>50,"EndG"=>50,"EndB"=>50,"Alpha"=>80));

 /* 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,"drawFilledStepChart() - draw a filled step chart",array("R"=>255,"G"=>255,"B"=>255));

 /* Write the chart title */ 
 $myPicture->setFontProperties(array("FontName"=>"../fonts/Forgotte.ttf","FontSize"=>11));
 $myPicture->drawText(250,55,"Average temperature",array("FontSize"=>20,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));

 /* Draw the scale and 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->drawFilledStepChart(array("ForceTransparency"=>40,"DisplayValues"=>TRUE,"DisplayColor"=>DISPLAY_AUTO));
 $myPicture->setShadow(FALSE);

 /* Draw the scale and 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->drawFilledStepChart(array("ForceTransparency"=>40));
 $myPicture->setShadow(FALSE);

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

 /* Render the picture (choose the best way) */
 $myPicture->autoOutput("pictures/example.drawFilledStepChart.png");
Last updated on 08/04/2011 
by Jean-Damien 
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