ChartDirector 6.0 (Perl Edition)

Symbol Line Chart (2)




This example demonstrates using symbols to represent data points and using gradient color for plot area background.

Source Code Listing

[Standalone Version] perldemo\symbolline2.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 line chart
my $data0 = [42, 49, 33, 38, 64, 56, 29, 41, 44, 57, 59, 42];
my $data1 = [65, 75, 47, 34, 42, 49, 73, 62, 90, 69, 66, 78];
my $data2 = [36, 28, 25, 28, 38, 20, 22, 30, 25, 33, 30, 24];
my $labels = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];

# Create a XYChart object of size 600 x 375 pixels
my $c = new XYChart(600, 375);

# Add a title to the chart using 18pt Times Bold Italic font
$c->addTitle("Product Line Global Revenue", "timesbi.ttf", 18);

# Set the plotarea at (50, 55) and of 500 x 280 pixels in size. Use a vertical gradient color from
# light blue (f9f9ff) to sky blue (aaccff) as background. Set border to transparent and grid lines
# to white (ffffff).
$c->setPlotArea(50, 55, 500, 280, $c->linearGradientColor(0, 55, 0, 335, 0xf9fcff, 0xaaccff), -1,
    $perlchartdir::Transparent, 0xffffff);

# Add a legend box at (50, 28) using horizontal layout. Use 10pt Arial Bold as font, with
# transparent background.
$c->addLegend(50, 28, 0, "arialbd.ttf", 10)->setBackground($perlchartdir::Transparent);

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

# Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this as the guideline
# when putting ticks on the y-axis.
$c->yAxis()->setTickDensity(30);

# Set axis label style to 8pt Arial Bold
$c->xAxis()->setLabelStyle("arialbd.ttf", 8);
$c->yAxis()->setLabelStyle("arialbd.ttf", 8);

# Set axis line width to 2 pixels
$c->xAxis()->setWidth(2);
$c->yAxis()->setWidth(2);

# Add axis title using 10pt Arial Bold Italic font
$c->yAxis()->setTitle("Revenue in USD millions", "arialbi.ttf", 10);

# Add a line layer to the chart
my $layer = $c->addLineLayer2();

# Set the line width to 3 pixels
$layer->setLineWidth(3);

# Add the three data sets to the line layer, using circles, diamands and X shapes as symbols
$layer->addDataSet($data0, 0xff0000, "Quantum Computer")->setDataSymbol($perlchartdir::CircleSymbol,
    9);
$layer->addDataSet($data1, 0x00ff00, "Atom Synthesizer")->setDataSymbol(
    $perlchartdir::DiamondSymbol, 11);
$layer->addDataSet($data2, 0xff6600, "Proton Cannon")->setDataSymbol(perlchartdir::Cross2Shape(), 11
    );

# Output the chart
$c->makeChart("symbolline2.png")

[CGI Version] perldemo_cgi\symbolline2.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 line chart
my $data0 = [42, 49, 33, 38, 64, 56, 29, 41, 44, 57, 59, 42];
my $data1 = [65, 75, 47, 34, 42, 49, 73, 62, 90, 69, 66, 78];
my $data2 = [36, 28, 25, 28, 38, 20, 22, 30, 25, 33, 30, 24];
my $labels = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];

# Create a XYChart object of size 600 x 375 pixels
my $c = new XYChart(600, 375);

# Add a title to the chart using 18pt Times Bold Italic font
$c->addTitle("Product Line Global Revenue", "timesbi.ttf", 18);

# Set the plotarea at (50, 55) and of 500 x 280 pixels in size. Use a vertical gradient color from
# light blue (f9f9ff) to sky blue (aaccff) as background. Set border to transparent and grid lines
# to white (ffffff).
$c->setPlotArea(50, 55, 500, 280, $c->linearGradientColor(0, 55, 0, 335, 0xf9fcff, 0xaaccff), -1,
    $perlchartdir::Transparent, 0xffffff);

# Add a legend box at (50, 28) using horizontal layout. Use 10pt Arial Bold as font, with
# transparent background.
$c->addLegend(50, 28, 0, "arialbd.ttf", 10)->setBackground($perlchartdir::Transparent);

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

# Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this as the guideline
# when putting ticks on the y-axis.
$c->yAxis()->setTickDensity(30);

# Set axis label style to 8pt Arial Bold
$c->xAxis()->setLabelStyle("arialbd.ttf", 8);
$c->yAxis()->setLabelStyle("arialbd.ttf", 8);

# Set axis line width to 2 pixels
$c->xAxis()->setWidth(2);
$c->yAxis()->setWidth(2);

# Add axis title using 10pt Arial Bold Italic font
$c->yAxis()->setTitle("Revenue in USD millions", "arialbi.ttf", 10);

# Add a line layer to the chart
my $layer = $c->addLineLayer2();

# Set the line width to 3 pixels
$layer->setLineWidth(3);

# Add the three data sets to the line layer, using circles, diamands and X shapes as symbols
$layer->addDataSet($data0, 0xff0000, "Quantum Computer")->setDataSymbol($perlchartdir::CircleSymbol,
    9);
$layer->addDataSet($data1, 0x00ff00, "Atom Synthesizer")->setDataSymbol(
    $perlchartdir::DiamondSymbol, 11);
$layer->addDataSet($data2, 0xff6600, "Proton Cannon")->setDataSymbol(perlchartdir::Cross2Shape(), 11
    );

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