ChartDirector Ver 4.1 (Perl Edition)

Cylinder Bar Shading




This example demonstrates using cylinder shading effect for bars and gradient color for plot area background. It also demonstrates putting axis labels on both sides of the plot area.

The cylinder shading effect is the result of using the cylinder bar shape in 2D.

Source Code Listing

[Standalone Version] perldemo\cylinderlightbar.pl
#!/usr/bin/perl
use perlchartdir;

# The data for the bar chart
my $data = [450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700];

# The labels for the bar chart
my $labels = ["1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004",
    "2005"];

# Create a XYChart object of size 600 x 360 pixels
my $c = new XYChart(600, 360);

# Add a title to the chart using 18pts Times Bold Italic font
$c->addTitle("Annual Revenue for Star Tech", "timesbi.ttf", 18);

# Set the plotarea at (60, 40) and of size 480 x 280 pixels. Use a vertical gradient
# color from light green (eeffee) to dark green (008800) as background. Set border
# and grid lines to white (ffffff).
$c->setPlotArea(60, 40, 480, 280, $c->linearGradientColor(60, 40, 60, 280, 0xeeffee,
    0x008800), -1, 0xffffff, 0xffffff);

# Add a multi-color bar chart layer using the supplied data. Set cylinder bar shape.
$c->addBarLayer3($data)->setBarShape($perlchartdir::CircleShape);

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

# Show the same scale on the left and right y-axes
$c->syncYAxis();

# Set the left y-axis and right y-axis title using 10pt Arial Bold font
$c->yAxis()->setTitle("USD (millions)", "arialbd.ttf", 10);
$c->yAxis2()->setTitle("USD (millions)", "arialbd.ttf", 10);

# Set all axes to transparent
$c->xAxis()->setColors($perlchartdir::Transparent);
$c->yAxis()->setColors($perlchartdir::Transparent);
$c->yAxis2()->setColors($perlchartdir::Transparent);

# Set the label styles of all axes to 8pt Arial Bold font
$c->xAxis()->setLabelStyle("arialbd.ttf", 8);
$c->yAxis()->setLabelStyle("arialbd.ttf", 8);
$c->yAxis2()->setLabelStyle("arialbd.ttf", 8);

# output the chart
$c->makeChart("cylinderlightbar.png")

[CGI Version] perldemo_cgi\cylinderlightbar.pl
#!/usr/bin/perl

# Include current script directory in the module path (needed on Microsoft IIS).
# This allows this script to work by copying ChartDirector to the same directory
# as the script (as an alternative to installation in Perl module directory)
use File::Basename;
use lib dirname($0);

use perlchartdir;

# The data for the bar chart
my $data = [450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700];

# The labels for the bar chart
my $labels = ["1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004",
    "2005"];

# Create a XYChart object of size 600 x 360 pixels
my $c = new XYChart(600, 360);

# Add a title to the chart using 18pts Times Bold Italic font
$c->addTitle("Annual Revenue for Star Tech", "timesbi.ttf", 18);

# Set the plotarea at (60, 40) and of size 480 x 280 pixels. Use a vertical gradient
# color from light green (eeffee) to dark green (008800) as background. Set border
# and grid lines to white (ffffff).
$c->setPlotArea(60, 40, 480, 280, $c->linearGradientColor(60, 40, 60, 280, 0xeeffee,
    0x008800), -1, 0xffffff, 0xffffff);

# Add a multi-color bar chart layer using the supplied data. Set cylinder bar shape.
$c->addBarLayer3($data)->setBarShape($perlchartdir::CircleShape);

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

# Show the same scale on the left and right y-axes
$c->syncYAxis();

# Set the left y-axis and right y-axis title using 10pt Arial Bold font
$c->yAxis()->setTitle("USD (millions)", "arialbd.ttf", 10);
$c->yAxis2()->setTitle("USD (millions)", "arialbd.ttf", 10);

# Set all axes to transparent
$c->xAxis()->setColors($perlchartdir::Transparent);
$c->yAxis()->setColors($perlchartdir::Transparent);
$c->yAxis2()->setColors($perlchartdir::Transparent);

# Set the label styles of all axes to 8pt Arial Bold font
$c->xAxis()->setLabelStyle("arialbd.ttf", 8);
$c->yAxis()->setLabelStyle("arialbd.ttf", 8);
$c->yAxis2()->setLabelStyle("arialbd.ttf", 8);

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