GraphViz::Data::GrapheUser Contributed Perl DocumentGraphViz::Data::Grapher(3)NAMEGraphViz::Data::Grapher - Visualise data structures as a graph
SYNOPSIS
use GraphViz::Data::Grapher;
my $graph = GraphViz::Data::Grapher->new($structure);
print $graph->as_png;
DESCRIPTION
This module makes it easy to visualise Perl data structures. Data
structures can grow quite large and it can be hard to understand the
quite how the structure fits together.
Data::Dumper can help by representing the structure as a text
heirarchy, but GraphViz::Data::Grapher goes a step further and
visualises the structure by drawing a graph which represents the data
structure.
Arrays are represented by records. Scalars are represented by
themselves. Array references are represented by a '@' symbol, which is
linked to the array. Hash references are represented by a '%' symbol,
which is linked to an array of keys, which each link to their value.
Object references are represented by 'Object', which then links to the
type of the object. Undef is represented by 'undef'.
METHODS
new
This is the constructor. It takes a list, which is the data structure
to be visualised. A GraphViz object is returned.
my $graph = GraphViz::Data::Grapher->new([3, 4, 5], "Hello");
as_*
The data structure can be visualised in a number of different graphical
formats. Methods include as_ps, as_hpgl, as_pcl, as_mif, as_pic, as_gd,
as_gd2, as_gif, as_jpeg, as_png, as_wbmp, as_ismap, as_imap, as_vrml,
as_vtx, as_mp, as_fig, as_svg. See the GraphViz documentation for more
information. The two most common methods are:
# Print out a PNG-format file
print $graph->as_png;
# Print out a PostScript-format file
print $graph->as_ps;
AUTHOR
Leon Brocard <acme@astray.com>
COPYRIGHT
Copyright (C) 2000-1, Leon Brocard
This module is free software; you can redistribute it or modify it
under the same terms as Perl itself.
perl v5.14.3 2012-11-09 GraphViz::Data::Grapher(3)
