#!/usr/bin/perl
# In the sample code, the ChartDirector for Perl module is assumed to be in "../lib"
use File::Basename;
use lib (dirname($0)."/../lib") =~ /(.*)/;
use perlchartdir;
# The (x, y, z) coordinates of the scattered data
my $dataX = [0.5, 1.9, 4.9, 1.0, 8.9, 9.8, 5.9, 2.9, 6.8, 9.0, 0.0, 8.9, 1.9, 4.8, 2.4, 3.4, 7.9,
7.5, 4.8, 7.5, 9.5, 0.4, 8.9, 0.9, 5.4, 9.4, 2.9, 8.9, 0.9, 8.9, 10.0, 1.0, 6.8, 3.8, 9.0, 5.3,
6.4, 4.9, 4.5, 2.0, 5.4, 0.0, 10.0, 3.9, 5.4, 5.9, 5.8, 0.3, 4.4, 8.3];
my $dataY = [3.3, 3.0, 0.7, 1.0, 9.3, 4.5, 8.4, 0.1, 0.8, 0.1, 9.3, 1.8, 4.3, 1.3, 2.3, 5.4, 6.9,
9.0, 9.8, 7.5, 1.8, 1.4, 4.5, 7.8, 3.8, 4.0, 2.9, 2.4, 3.9, 2.9, 2.3, 9.3, 2.0, 3.4, 4.8, 2.3,
3.4, 2.3, 1.5, 7.8, 4.5, 0.9, 6.3, 2.4, 6.9, 2.8, 1.3, 2.9, 6.4, 6.3];
my $dataZ = [6.6, 12.5, 7.4, 6.2, 9.6, 13.6, 19.9, 2.2, 6.9, 3.4, 8.7, 8.4, 7.8, 8.0, 9.4, 11.9,
9.6, 15.7, 12.0, 13.3, 9.6, 6.4, 9.0, 6.9, 4.6, 9.7, 10.6, 9.2, 7.0, 6.9, 9.7, 8.6, 8.0, 13.6,
13.2, 5.9, 9.0, 3.2, 8.3, 9.7, 8.2, 6.1, 8.7, 5.6, 14.9, 9.8, 9.3, 5.1, 10.8, 9.8];
# Create a XYChart object of size 450 x 540 pixels
my $c = new XYChart(450, 540);
# Add a title to the chart using 15 points Arial Italic font
$c->addTitle(" Contour Chart with Scattered Data", "ariali.ttf", 15);
# Set the plotarea at (65, 40) and of size 360 x 360 pixels. Use semi-transparent black (c0000000)
# for both horizontal and vertical grid lines
$c->setPlotArea(65, 40, 360, 360, -1, -1, -1, 0xc0000000, -1);
# Set x-axis and y-axis title using 12 points Arial Bold Italic font
$c->xAxis()->setTitle("X-Axis Title Place Holder", "arialbi.ttf", 10);
$c->yAxis()->setTitle("Y-Axis Title Place Holder", "arialbi.ttf", 10);
# Set x-axis and y-axis labels to use Arial Bold font
$c->xAxis()->setLabelStyle("arialbd.ttf");
$c->yAxis()->setLabelStyle("arialbd.ttf");
# When x-axis and y-axis color to transparent
$c->xAxis()->setColors($perlchartdir::Transparent);
$c->yAxis()->setColors($perlchartdir::Transparent);
# Add a scatter layer to the chart to show the position of the data points
$c->addScatterLayer($dataX, $dataY, "", perlchartdir::Cross2Shape(0.2), 7, 0x000000);
# Add a contour layer using the given data
my $layer = $c->addContourLayer($dataX, $dataY, $dataZ);
# Move the grid lines in front of the contour layer
$c->getPlotArea()->moveGridBefore($layer);
# Add a color axis (the legend) in which the top center is anchored at (245, 455). Set the length to
# 330 pixels and the labels on the top side.
my $cAxis = $layer->setColorAxis(245, 455, $perlchartdir::TopCenter, 330, $perlchartdir::Top);
# Add a bounding box to the color axis using the default line color as border.
$cAxis->setBoundingBox($perlchartdir::Transparent, $perlchartdir::LineColor);
# Add a title to the color axis using 12 points Arial Bold Italic font
$cAxis->setTitle("Color Legend Title Place Holder", "arialbi.ttf", 10);
# Set color axis labels to use Arial Bold font
$cAxis->setLabelStyle("arialbd.ttf");
# Set the color axis range as 0 to 20, with a step every 2 units
$cAxis->setLinearScale(0, 20, 2);
# Output the chart
$c->makeChart("scattercontour.png") |
