<?php   
/* CAT:Line chart */

/* 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(3,12,15,8,5,5),"Probe 1");
$MyData->addPoints(array(8,7,5,18,19,22),"Probe 2");
$MyData->setSerieWeight("Probe 1",2);
$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");

/* Reverse the Y axis trick */
$MyData->setAbsicssaPosition(AXIS_POSITION_TOP);
$MyData->NegateValues(array("Probe 1","Probe 2","Probe 3"));
$MyData->setAxisDisplay(0,AXIS_FORMAT_CUSTOM,"NegateValues");
function NegateValues($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 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 chart title */
$myPicture->setFontProperties(array("FontName"=>"../fonts/Forgotte.ttf","FontSize"=>8,"R"=>255,"G"=>255,"B"=>255));
$myPicture->drawText(10,16,"Average recorded temperature",array("FontSize"=>11,"Align"=>TEXT_ALIGN_BOTTOMLEFT));

/* Set the default font */
$myPicture->setFontProperties(array("FontName"=>"../fonts/pf_arma_five.ttf","FontSize"=>6,"R"=>0,"G"=>0,"B"=>0));

/* Define the chart area */
$myPicture->setGraphArea(60,50,650,220);

/* 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;

/* Enable shadow computing */
$myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>10));

/* Draw the line chart */
$myPicture->drawLineChart();
$myPicture->drawPlotChart(array("DisplayValues"=>TRUE,"PlotBorder"=>TRUE,"BorderSize"=>2,"Surrounding"=>-60,"BorderAlpha"=>80));

/* Write the chart legend */
$myPicture->drawLegend(590,9,array("Style"=>LEGEND_NOBORDER,"Mode"=>LEGEND_HORIZONTAL,"FontR"=>255,"FontG"=>255,"FontB"=>255));

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