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Template::Plugin::GD::Graph::bars.3pm

NAME

Template::Plugin::GD::Graph::bars - Create bar graphs with axes and legends

SYNOPSIS

     [% USE g = GD.Graph.bars(x_size, y_size); %]
 
 

EXAMPLES

     [% FILTER null;
         data = [  
             ["1st","2nd","3rd","4th","5th","6th","7th", "8th", "9th"],
             [    1,    2,    5,    6,    3,  1.5,    1,     3,     4],
         ];
         
         USE my_graph = GD.Graph.bars();
         
         my_graph.set(
             x_label         => 'X Label',
             y_label         => 'Y label',
             title           => 'A Simple Bar Chart',
             y_max_value     => 8,
             y_tick_number   => 8, 
             y_label_skip    => 2,
 
             # shadows
             bar_spacing     => 8,
             shadow_depth    => 4, 
             shadowclr       => 'dred',
 
             transparent     => 0,
         );      
         my_graph.plot(data).png | stdout(1);
        END;
     -%]
 
     [% FILTER null;
         data = [
             ["1st","2nd","3rd","4th","5th","6th","7th", "8th", "9th"],
             [    5,   12,   24,   33,   19,    8,    6,    15,    21],
             [    1,    2,    5,    6,    3,  1.5,    1,     3,     4],
         ];      
         
         USE my_graph = GD.Graph.bars();
 
         my_graph.set(
             x_label         => 'X Label',
             y_label         => 'Y label',
             title           => 'Two data sets',
         
             # shadows
             bar_spacing     => 8,
             shadow_depth    => 4,
             shadowclr       => 'dred',
 
             long_ticks      => 1,
             y_max_value     => 40,
             y_tick_number   => 8,
             y_label_skip    => 2,
             bar_spacing     => 3,
 
             accent_treshold => 200,
 
             transparent     => 0,
         );
         my_graph.set_legend( 'Data set 1', 'Data set 2' );
         my_graph.plot(data).png | stdout(1);
        END;
     -%]
 
 

DESCRIPTION

The GD.Graph.bars plugin provides an interface to the GD::Graph::bars class defined by the GD::Graph module. It allows one or more (x,y) data sets to be plotted with each point represented by a bar, in addition to axes and legends.

See GD::Graph for more details.

AUTHOR

Thomas Boutell wrote the GD graphics library.

Lincoln D. Stein wrote the Perl GD modules that interface to it.

Martien Verbruggen wrote the GD::Graph module.

Craig Barratt <craig@arraycomm.com> wrote the original GD plugins for the Template Toolkit (2001).

Andy Wardley <abw@cpan.org> extracted them from the TT core into a separate distribution for TT version 2.15.

COPYRIGHT

Copyright (C) 2001 Craig Barratt <craig@arraycomm.com>, 2006 Andy Wardley <abw@cpan.org>.

GD::Graph is copyright 1999 Martien Verbruggen.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

Template::Plugin::GD, Template::Plugin::GD::Graph::lines, Template::Plugin::GD::Graph::lines3d, Template::Plugin::GD::Graph::bars3d, Template::Plugin::GD::Graph::points, Template::Plugin::GD::Graph::linespoints, Template::Plugin::GD::Graph::area, Template::Plugin::GD::Graph::mixed, Template::Plugin::GD::Graph::pie, Template::Plugin::GD::Graph::pie3d, GD