---
name: "Graph::Writer::GraphViz"
section: "3pm"
platform: "linux"
package: "libgraph-writer-graphviz-perl"
version: "0.12-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Graph::Writer::GraphViz"
---

# Graph::Writer::GraphViz(3pm)

GraphViz Writer for Graph object

## NAME

Graph::Writer::GraphViz - GraphViz Writer for Graph object

## SYNOPSIS

```
  my @v = qw/Alice Bob Crude Dr/;
  my $g = Graph->new(@v);
  my $wr = Graph::Writer::GraphViz->new(-format => 'dot');
  $wr->write_graph($g,'/tmp/graph.simple.dot');
  my $wr_png = Graph::Writer::GraphViz->new(-format => 'png');
  $wr_png->write_graph($g,'/tmp/graph.simple.png');
  Graph::Writer::GraphViz->new(
        -format => 'png',
        -layout => 'twopi',
        -ranksep => 1.5,
        -fontsize => 8
        -edge_color => 'grey',
        -node_color => 'black',
       )->write_graph($g,'/tmp/graph.png');
```

## DESCRIPTION

**Graph::Writer::GraphViz** is a class for writing out a Graph object with GraphViz module. All GraphViz formats should be supported without a problem.

## METHODS

### new()

Unlike other **Graph::Writer** modules, this module provide an extra parameter '-format' to **new()** method, in order to save different format.  Other supported GraphViz parameters are -layout, -ranksep, -shape, -fontsize, -arrowsize.  Please see the SYNOPSIS for example usage.

Valid format depends on those GraphViz **as\_fmt** methods on your system, like, 'gif' if you have 'as\_gif', 'text' if you can do 'as\_text'.

## SEE ALSO

Graph, Graph::Writer, GraphViz

## AUTHOR

Kang-min Liu \<gugod@gugod.org\>

## CREDITS

Thanks for RURBAN@cpan.org for noticing tests failure on different platforms.

## COPYRIGHT

Copyright 2004 by Kang-min Liu \<gugod@gugod.org\>.

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

See \<http://www.perl.com/perl/misc/Artistic.html\>