ChartDirector 7.0 (PHP Edition)

Depth Area Chart




This example demonstrates using multiple area layers with semi-transparent colors to create a depth area chart.

ChartDirector allows an XYChart to containing multiple layers of the same or different types. In this example, all layers are 3D area layers. The areas are filled using semi-transparent colors to avoid the area on the front hiding the areas at the back.

Source Code Listing

[File: phpdemo/deptharea.php]
<?php require_once("../lib/phpchartdir.php"); # The data for the area chart $data0 = array(42, 49, 33, 38, 51, 46, 29, 41, 44, 57, 59, 52, 37, 34, 51, 56, 56, 60, 70, 76, 63, 67, 75, 64, 51); $data1 = array(50, 55, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50, 64, 60, 67, 67, 58, 59, 73, 77, 84, 82, 80, 84, 89); $data2 = array(87, 89, 85, 66, 53, 39, 24, 21, 37, 56, 37, 22, 21, 33, 13, 17, 4, 23, 16, 25, 9, 10, 5, 7, 6); $labels = array("0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24"); # Create a XYChart object of size 350 x 230 pixels $c = new XYChart(350, 230); # Set the plotarea at (50, 30) and of size 250 x 150 pixels. $c->setPlotArea(50, 30, 250, 150); # Add a legend box at (55, 0) (top of the chart) using 8pt Arial Font. Set background and border to # Transparent. $c->addLegend(55, 0, false, "", 8)->setBackground(Transparent); # Add a title to the x axis $c->xAxis->setTitle("Network Load for Jun 12"); # Add a title to the y axis $c->yAxis->setTitle("MBytes"); # Set the labels on the x axis. $c->xAxis->setLabels($labels); # Display 1 out of 2 labels on the x-axis. Show minor ticks for remaining labels. $c->xAxis->setLabelStep(2, 1); # Add three area layers, each representing one data set. The areas are drawn in semi-transparent # colors. $c->addAreaLayer($data2, 0x808080ff, "Server #1", 3); $c->addAreaLayer($data0, 0x80ff0000, "Server #2", 3); $c->addAreaLayer($data1, 0x8000ff00, "Server #3", 3); # Output the chart $viewer = new WebChartViewer("chart1"); $viewer->setChart($c, SVG); # Include tool tip for the chart $viewer->setImageMap($c->getHTMLImageMap("", "", "title='{dataSetName} load at hour {xLabel}: {value} MBytes'")); ?> <!DOCTYPE html> <html> <head> <title>Depth Area Chart</title> <!-- Include ChartDirector Javascript Library to support chart interactions --> <script type="text/javascript" src="cdjcv.js"></script> </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> Depth Area Chart </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a> </div> <!-- ****** Here is the chart image ****** --> <?php echo $viewer->renderHTML(); ?> </body> </html>