This example demostrates using a pattern for filling the area in an area chart, together with a number of chart formatting features.

• Create a XYChart object with background color and border using XYChart.XYChart.
  
  
• Set the background color of the title box using Box.setBackground. The background color is a pattern color created using BaseChart.patternColor.
  
  
• Enable both vertical and horizontal grid lines using XYChart.setPlotArea. The grid colors are dash line colors created using BaseChart.dashLineColor.
  
  
• Create a pattern color with a "snow pattern" loaded from an image file using BaseChart.patternColor2.
  
  
• Use DataSet.setDataColor to specify the area fill and border colors. Use the "snow pattern" as the area fill color.
  
  
• Use Layer.setLineWidth to increase the border width of the area to highlight it.

[File: phpdemo/patternarea.php".]

<?php require_once("../lib/phpchartdir.php"); #The data for the area chart $data = array(3.0, 2.8, 4.0, 5.5, 7.5, 6.8, 5.4, 6.0, 5.0, 6.2, 7.5, 6.5, 7.5, 8.1, 6.0, 5.5, 5.3, 3.5, 5.0, 6.6, 5.6, 4.8, 5.2, 6.5, 6.2); #The labels for the area chart $labels = array("0", "", "", "3", "", "", "6", "", "", "9", "", "", "12", "", "", "15", "", "", "18", "", "", "21", "", "", "24"); #Create a XYChart object of size 300 x 180 pixels. Set the background to pale #yellow (0xffffa0) with a black border (0x0) $c = new XYChart(300, 180, 0xffffa0, 0x0); #Set the plotarea at (45, 35) and of size 240 x 120 pixels. Set the background #to white (0xffffff). Set both horizontal and vertical grid lines to black #(&H0&) dotted lines (pattern code 0x0103) $c->setPlotArea(45, 35, 240, 120, 0xffffff, -1, -1, $c->dashLineColor(0x0, 0x103 ), $c->dashLineColor(0x0, 0x103)); #Add a title to the chart using 10 pts Arial Bold font. Use a 1 x 2 bitmap #pattern as the background. Set the border to black (0x0). $titleObj = $c->addTitle("Snow Percipitation (Dec 12)", "arialbd.ttf", 10); $titleObj->setBackground($c->patternColor(array(0xb0b0f0, 0xe0e0ff), 2), 0x0); #Add a title to the y axis $c->yAxis->setTitle("mm per hour"); #Set the x axis labels using the given labels $c->xAxis->setLabels($labels); #Add an area layer to the chart $layer = $c->addAreaLayer(); #Load a snow pattern from an external file "snow.png". $snowPattern = $c->patternColor(dirname(__FILE__)."/snow.png"); #Add a data set to the area layer using the snow pattern as the fill color. Use #deep blue (0x0000ff) as the area border line color (&H0000ff&) $dataSetObj = $layer->addDataSet($data); $dataSetObj->setDataColor($snowPattern, 0xff); #Set the line width to 2 pixels to highlight the line $layer->setLineWidth(2); #output the chart header("Content-type: image/png"); print($c->makeChart2(PNG)); ?>