NAME
GD::Graph::radar - Make radial bar charts
SYNOPSIS
use GD::Graph::radar;
my $radar = GD::Graph::radar->new(400, 400);
my $image = $radar->plot([
[qw( a b c d e f g h i )],
[qw( 3.2 9 4.4 3.9 4.1 4.3 7 6.1 5 )]
]);
print $image->png; #or ->gif, or ->jpeg, or...DESCRIPTION
This module is based on GD::Graph::pie with the exception of changes to the default settings, the draw_data method, and elimination of the pie specific code.
PUBLIC METHODS
new()
$img = GD::Graph::radar->new();Create a new GD::Graph::radar object.
plot()
Create the image.
PRIVATE METHODS
initialise()
Setup defaults.
set_label_font()
Set the font-name of the label.
set_value_font()
Set the font-name of the value.
setup_coords()
Setup the coordinate system and colours. Calculate the relative axis coordinates with respect to the canvas size.
setup_text()
Setup the parameters for the text elements.
draw_text()
Put the text on the canvas.
draw_data()
Draw the data lines and the polygon.
put_slice_label()
Put the slice label on the pie.
cartesian()
Return x, y coordinates, radius, angle, center x and y, and a scaling factor (height/width).
SEE ALSO
* The code in the eg/ and t/ directories.
GD::Graph::pie for an example of a similar plotting API.
AUTHOR
Original code by Brad J. Murray <bjm@phreeow.net>
Maintenance by Gene Boggs <gene@cpan.org>
COPYRIGHT AND LICENSE
Copyright 2003 by Brad J. Murray
Copyright 2012 by Gene Boggs
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.