ChartDirector 7.0 (Perl Edition)

Multi-Line Chart (1)




This example demonstrates a chart with multiple lines of different styles. It also demonstrates using frame with rounded corners, title with glass shading effect, both vertical and horizontal grid lines, and a legend at the top of the plot area.

Source Code Listing

perldemo\multiline.pl
#!/usr/bin/perl # The ChartDirector for Perl module is assumed to be in "../lib" use File::Basename; use lib (dirname($0)."/../lib") =~ /(.*)/; use perlchartdir; # The data for the line 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, 98]; my $data2 = [36, 28, 25, 33, 38, 20, 22, 30, 25, 33, 30, 24, 28, 15, 21, 26, 46, 42, 48, 45, 43, 52, 64, 60, 70]; # The labels for the line chart my $labels = ["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 an XYChart object of size 600 x 300 pixels, with a light blue (EEEEFF) background, black # border, 1 pxiel 3D border effect and rounded corners my $c = new XYChart(600, 300, 0xeeeeff, 0x000000, 1); $c->setRoundedFrame(); # Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white background. Turn on both # horizontal and vertical grid lines with light grey color (0xcccccc) $c->setPlotArea(55, 58, 520, 195, 0xffffff, -1, -1, 0xcccccc, 0xcccccc); # Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 9pt Arial Bold font. # Set the background and border color to Transparent. $c->addLegend(50, 30, 0, "Arial Bold", 9)->setBackground($perlchartdir::Transparent); # Add a title box to the chart using 15pt Times Bold Italic font, on a light blue (CCCCFF) # background with glass effect. white (0xffffff) on a dark red (0x800000) background, with a 1 pixel # 3D border. $c->addTitle("Application Server Throughput", "Times New Roman Bold Italic", 15)->setBackground( 0xccccff, 0x000000, perlchartdir::glassEffect()); # Add a title to the y axis $c->yAxis()->setTitle("MBytes per hour"); # Set the labels on the x axis. $c->xAxis()->setLabels($labels); # Display 1 out of 3 labels on the x-axis. $c->xAxis()->setLabelStep(3); # Add a title to the x axis $c->xAxis()->setTitle("Jun 12, 2006"); # Add a line layer to the chart my $layer = $c->addLineLayer2(); # Set the default line width to 2 pixels $layer->setLineWidth(2); # Add the three data sets to the line layer. For demo purpose, we use a dash line color for the last # line $layer->addDataSet($data0, 0xff0000, "Server #1"); $layer->addDataSet($data1, 0x008800, "Server #2"); $layer->addDataSet($data2, $c->dashLineColor(0x3333ff, $perlchartdir::DashLine), "Server #3"); # Output the chart $c->makeChart("multiline.png");