Rotated Pyramid Chart

This example demonstrates a semi-transparent pyramid viewed at elevation and rotation angles. It also demonstrates adding a legend box to the pyramid chart.

The elevation and rotation angles are set using PyramidChart.setViewAngle. The legend box is added using BaseChart.addLegend. Semi-transparent colors are used to make the pyramid semi-transparent.

perldemo\rotatedpyramid.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 pyramid chart
my $data = [156, 123, 211, 179];

# The labels for the pyramid chart
my $labels = ["Funds", "Bonds", "Stocks", "Cash"];

# The semi-transparent colors for the pyramid layers
my $colors = [0x400000cc, 0x4066aaee, 0x40ffbb00, 0x40ee6622];

# Create a PyramidChart object of size 450 x 400 pixels
my $c = new PyramidChart(450, 400);

# Set the pyramid center at (220, 180), and width x height to 150 x 300 pixels
$c->setPyramidSize(220, 180, 150, 300);

# Set the elevation to 15 degrees and rotation to 75 degrees
$c->setViewAngle(15, 75);

# Set the pyramid data and labels
$c->setData($data, $labels);

# Set the layer colors to the given colors
$c->setColors2($perlchartdir::DataColor, $colors);

# Leave 1% gaps between layers
$c->setLayerGap(0.01);

# Add a legend box at (320, 60), with light grey (eeeeee) background and grey (888888) border. Set
# the top-left and bottom-right corners to rounded corners of 10 pixels radius.
my $legendBox = $c->addLegend(320, 60);
$legendBox->setBackground(0xeeeeee, 0x888888);
$legendBox->setRoundedCorners(10, 0, 10, 0);

# Add labels at the center of the pyramid layers using Arial Bold font. The labels will show the
# percentage of the layers.
$c->setCenterLabel("{percent}%", "Arial Bold");

# Output the chart
$c->makeChart("rotatedpyramid.png");