Simple Bar Chart (1)

This example demonstrates the basic steps in creating bar charts.

Create an XYChart object using XYChart.XYChart.
Specify the plot area of the chart using XYChart.setPlotArea. The plot area is the rectangle bounded by the x and y axes. You should leave some margin on the outside of the plot area for axis labels, chart titles, etc.
Specify the labels on the x-axis using Axis.setLabels.
Add a bar layer and specify the data for the bars using XYChart.addBarLayer.
Generate the chart using BaseChart.makeChart.

[Standalone Version] perldemo\simplebar.pl

#!/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 data for the bar chart
my $data = [85, 156, 179.5, 211, 123];

# The labels for the bar chart
my $labels = ["Mon", "Tue", "Wed", "Thu", "Fri"];

# Create a XYChart object of size 250 x 250 pixels
my $c = new XYChart(250, 250);

# Set the plotarea at (30, 20) and of size 200 x 200 pixels
$c->setPlotArea(30, 20, 200, 200);

# Add a bar chart layer using the given data
$c->addBarLayer($data);

# Set the labels on the x axis.
$c->xAxis()->setLabels($labels);

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

[CGI Version] perldemo_cgi\simplebar.pl

#!/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 data for the bar chart
my $data = [85, 156, 179.5, 211, 123];

# The labels for the bar chart
my $labels = ["Mon", "Tue", "Wed", "Thu", "Fri"];

# Create a XYChart object of size 250 x 250 pixels
my $c = new XYChart(250, 250);

# Set the plotarea at (30, 20) and of size 200 x 200 pixels
$c->setPlotArea(30, 20, 200, 200);

# Add a bar chart layer using the given data
$c->addBarLayer($data);

# Set the labels on the x axis.
$c->xAxis()->setLabels($labels);

# Output the chart
binmode(STDOUT);
print "Content-type: image/png\n\n";
print $c->makeChart2($perlchartdir::PNG);