Contents

= Ruby/GraphViz

Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Gregoire Lejeune

* Doc : http://rdoc.info/projects/glejeune/Ruby-Graphviz
* Sources : http://github.com/glejeune/Ruby-Graphviz

== DESCRIPTION

Interface to the GraphViz graphing tool

== SYNOPSIS

A basic example

  require 'graphviz'

  # Create a new graph
  g = GraphViz.new( :G, :type => :digraph )

  # Create two nodes
  hello = g.add_node( "Hello" )
  world = g.add_node( "World" )

  # Create an edge between the two nodes
  g.add_edge( hello, world )

  # Generate output image
  g.output( :png => "hello_world.png" )
  
The same but with a block

  require 'graphviz'

  GraphViz::new( :G, :type => :digraph ) { |g|
    g.world( :label => "World" ) << g.hello( :label => "Hello" )
  }.output( :png => "hello_world.png" )

Create a graph from a file 

  require 'graphviz'

  # In this example, hello.dot is :
  #   digraph G {Hello->World;}

  GraphViz.parse( "hello.dot", :path => "/usr/local/bin" ) { |g|
    g.get_node("Hello") { |n|
      n[:label] = "Bonjour"
    }
    g.get_node("World") { |n|
      n[:label] = "Le Monde"
    }
  }.output(:png => "sample.png")

== INSTALLATION

  sudo gem install ruby-graphviz

You also need to install GraphViz[http://www.graphviz.org] and Treetop[http://treetop.rubyforge.org/]

On *Windows* you also need to install win32-open3. This is not an absolute requirement.

== LICENCE

Ruby/GraphViz is freely distributable according to the terms of the
GNU General Public License (see the file 'COPYING').

This program is distributed without any warranty. See the file
'COPYING' for details.

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
ruby-graphviz-0.9.7	README.rdoc
ruby-graphviz-0.9.6	README.rdoc
ruby-graphviz-0.9.5	README.rdoc
ruby-graphviz-0.9.4	README.rdoc