= Node.js GraphViz Module

Copyright (C) 2010 Gregoire Lejeune

* Sources : http://github.com/glejeune/node-graphviz

== DESCRIPTION

Interface to the GraphViz graphing tool

== TODO

* So many things!

== CHANGELOG

=== 0.0.8 :
* Issue #10 : Update graphviz attributs

=== 0.0.7 :
* Issue #6 : fixed some calls to "sys"
* Issue #7 : Fixed so it can be installed on v0.8 (by Patrik Henningsson <https://github.com/pahen>)

=== 0.0.6 :
* Tiny corrections

=== 0.0.5 :
* graphviz.js: Don't require the 'sys' module.

=== 0.0.4 :
* Major correction in render : error callback now take three arguments : code, stdout, stderr
* Major correction in parse : error callback now take three arguments : code, stdout, stderr
* Major bugs corrections
* Update Attributs class
* parse now accept a file or a script
* Update render (see tests/hello.js)
* Add graph.from and node.to (see tests/compound.js)

=== 0.0.3 :

* Add attributs to addNode and addEdge
* Add parser (see tests/parse.js)

=== 0.0.2 :
* Added the ability to render in-memory (without writing to the filesystem) (By Mathieu Ravaux)
* Rewrite output method

=== 0.0.1 :
* Initial version

== SYNOPSIS

A basic example

  var util = require('util'),
    graphviz = require('graphviz');

  // Create digraph G
  var g = graphviz.digraph("G");

  // Add node (ID: Hello)
  var n1 = g.addNode( "Hello", {"color" : "blue"} );
  n1.set( "style", "filled" );

  // Add node (ID: World)
  g.addNode( "World" );

  // Add edge between the two nodes
  var e = g.addEdge( n1, "World" );
  e.set( "color", "red" );

  // Print the dot script
  console.log( g.to_dot() ); 

  // Set GraphViz path (if not in your path)
  g.setGraphVizPath( "/usr/local/bin" );
  // Generate a PNG output
  g.output( "png", "test01.png" );

== INSTALLATION

  $ cd ~/.node_libraries
  $ git clone git://github.com/glejeune/node-graphviz.git

Or :

  $ npm install graphviz

You also need to install GraphViz[http://www.graphviz.org]

== DOCUMENTATION

Install node-jake[http://github.com/mde/node-jake] and dox[http://github.com/visionmedia/dox] then run 

  jake doc && open documentation.html

== AUTHORS

* Gregoire Lejeune (http://algorithmique.net)
* Mathieu Ravaux (http://mathieuravaux.com)

== LICENCES

Copyright (c) 2010 Gregoire Lejeune <gregoire.lejeune@free.fr>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
