Graph::Easy 0.71

Graph::Easy is a Perl module that lets you generate graphs consisting of various shaped nodes connected by edges (with optional labels).

SYNOPSIS

 use Graph::Easy;
 
 my $graph = Graph::Easy->new();

 # make a fresh copy of the graph
 my $new_graph = $graph->copy();

 $graph->add_edge ('Bonn', 'Berlin');

 # will not add it, since it already exists
 $graph->add_edge_once ('Bonn', 'Berlin');

 print $graph->as_ascii( ); # prints:

 # +------+ +--------+
 # | Bonn | --> | Berlin |
 # +------+ +--------+

 #####################################################
 # alternatively, let Graph::Easy parse some text:

 my $graph = Graph::Easy->new( '[Bonn] -> [Berlin]' );

 #####################################################
 # slightly more verbose way:

 my $graph = Graph::Easy->new();

 my $bonn = $graph->add_node('Bonn');
 $bonn->set_attribute('border', 'solid 1px black')

 my $berlin = $graph->add_node('Berlin');

 $graph->add_edge ($bonn, $berlin);

 print $graph->as_ascii( );

 # You can use plain scalars as node names and for the edge label:
 $graph->add_edge ('Berlin', 'Frankfurt', 'via train');

 # adding edges with attributes:

 my $edge = Graph::Easy::Edge->new();
 $edge->set_attributes( {
 label => 'train',
 style => 'dotted',
 color => 'red',
 } );

 # now with the optional edge object
 $graph->add_edge ($bonn, $berlin, $edge);

 # raw HTML section
 print $graph->as_html( );

 # complete HTML page (with CSS)
 print $graph->as_html_file( );

 # Other possibilities:

 # SVG (possible after you installed Graph::Easy::As_svg):
 print $graph->as_svg( );

 # Graphviz:
 my $graphviz = $graph->as_graphviz();
 open $DOT, '|dot -Tpng -o graph.png' or die ("Cannot open pipe to dot: $!");
 print $DOT $graphviz;
 close $DOT;

 # Please see also the command line utility 'graph-easy'

It can read and write graphs in a varity of formats, as well as render them via its own grid-based layouter.

Since the layouter works on a grid (manhattan layout), the output is most usefull for flow charts, network diagrams, or hierarchy trees.


Product's homepage

Requirements:

· Perl