Graph::Writer::Dot - write out directed graph in Dot format
use Graph; use Graph::Writer::Dot; $graph = Graph->new(); # add edges and nodes to the graph $writer = Graph::Writer::Dot->new(); $writer->write_graph($graph, 'mygraph.dot');
Graph::Writer::Dot is a class for writing out a directed graph in the file format used by the dot tool (part of the AT+T graphviz package). The graph must be an instance of the Graph class, which is actually a set of classes developed by Jarkko Hietaniemi.
Constructor - generate a new writer instance.
$writer = Graph::Writer::Dot->new();
This can take one optional argument that tell to cluster nodes in subgraphs by using the attribute passed as value. See:
$writer = Graph::Writer::Dot->new(cluster => 'group');
It will group nodes that have the the same value in the 'group' attribute.
Write a specific graph to a named file:
$file argument can either be a filename, or a filehandle for a previously opened file.
The home page for the AT+T graphviz toolkit that includes the dot tool.
Jarkko Hietaniemi's modules for representing directed graphs, available from CPAN under modules/by-module/Graph/
- Algorithms in Perl
The O'Reilly book which has a chapter on directed graphs, which is based around Jarkko's modules.
The base-class for Graph::Writer::Dot
Neil Bowers <email@example.com>
Copyright (c) 2001-2012, Neil Bowers. All rights reserved. Copyright (c) 2001, Canon Research Centre Europe. All rights reserved.
This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself.