ChartDirector Ver 3.0 (Perl Edition)

Depth Area Chart




ChartDirector allows a XY chart 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: perldemo/deptharea.pl] (The CGI version is available as "perldemo_cgi/deptharea.pl".)
#!/usr/bin/perl use perlchartdir; #The data for the area chart my $data0 = [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]; my $data1 = [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]; my $data2 = [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]; my $labels = ["0", "-", "2", "-", "4", "-", "6", "-", "8", "-", "10", "-", "12", "-", "14", "-", "16", "-", "18", "-", "20", "-", "22", "-", "24"]; #Create a XYChart object of size 350 x 230 pixels my $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 8 pts Arial Font. Set #background and border to Transparent. $c->addLegend(55, 0, 0, "", 8)->setBackground($perlchartdir::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); #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 $c->makeChart("deptharea.png")