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Ruby/Graphviz provides an interface to layout and generate images of directed graphs in a variety of formats (PostScript, PNG, etc.) using GraphViz.
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 Dependencies

Development

Runtime

>= 0
 Project Readme

Ruby/GraphViz

All Contributors Travis CI build Gem Version

Copyright (C) 2004-2018 Gregoire Lejeune

INSTALLATION

Add this line to your application's Gemfile:

gem 'ruby-graphviz'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ruby-graphviz

DESCRIPTION

Interface to the GraphViz graphing tool

TODO

  • New FamilyTree

SYNOPSIS

A basic example

require 'ruby-graphviz'

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

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

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

# Generate output image
g.output( :png => "hello_world.png" )

The same but with a block

require 'ruby-graphviz'

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

Or with the DSL

    require 'ruby-graphviz/dsl'
    digraph :G do
      world[:label => "World"] << hello[:label => "Hello"]

      output :png => "hello_world.png"
    end

Create a graph from a file

    require 'ruby-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")

GraphML support

    require 'ruby-graphviz/graphml'

    g = GraphViz::GraphML.new( "graphml/cluster.graphml" )
    g.graph.output( :path => "/usr/local/bin", :png => "#{$0}.png" )

TOOLS

Ruby/GraphViz also includes :

  • ruby2gv, a simple tool that allows you to create a dependency graph from a ruby script. Example : http://drp.ly/dShaZ
ruby2gv -Tpng -oruby2gv.png ruby2gv
  • gem2gv, a tool that allows you to create a dependency graph between gems. Example : http://drp.ly/dSj9Y
gem2gv -Tpng -oruby-graphviz.png ruby-graphviz
  • dot2ruby, a tool that allows you to create a ruby script from a graphviz script
$ cat hello.dot
digraph G {Hello->World;}

$ dot2ruby hello.dot
# This code was generated by dot2ruby.g

require 'rubygems'
require 'ruby-graphviz'
graph_g = GraphViz.digraph( "G" ) { |graph_g|
  graph_g[:bb] = '0,0,70,108'
  node_hello = graph_g.add_nodes( "Hello", :height => '0.5', :label => '\N', :pos => '35,90', :width => '0.88889' )
  graph_g.add_edges( "Hello", "World", :pos => 'e,35,36.413 35,71.831 35,64.131 35,54.974 35,46.417' )
  node_world = graph_g.add_nodes( "World", :height => '0.5', :label => '\N', :pos => '35,18', :width => '0.97222' )
}
puts graph_g.output( :canon => String )
  • git2gv, a tool that allows you to show your git commits

  • xml2gv, a tool that allows you to show a xml file as graph.

GRAPH THEORY

require 'ruby-graphviz'
require 'ruby-graphviz/theory'

g = GraphViz.new( :G ) { ... }

t = GraphViz::Theory.new( g )

puts "Adjancy matrix : "
puts t.adjancy_matrix

puts "Symmetric ? #{t.symmetric?}"

puts "Incidence matrix :"
puts t.incidence_matrix

g.each_node do |name, node|
  puts "Degree of node `#{name}' = #{t.degree(node)}"
end

puts "Laplacian matrix :"
puts t.laplacian_matrix

puts "Dijkstra between a and f"
r = t.moore_dijkstra(g.a, g.f)
if r.nil?
  puts "No way !"
else
  print "\tPath : "; p r[:path]
  puts "\tDistance : #{r[:distance]}"
end

print "Ranges : "
rr = t.range
p rr
puts "Your graph contains circuits" if rr.include?(nil)

puts "Critical path : "
rrr = t.critical_path
print "\tPath "; p rrr[:path]
puts "\tDistance : #{rrr[:distance]}"

INSTALLATION

sudo gem install ruby-graphviz

You also need to install GraphViz

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

LICENCES

Ruby/GraphViz

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.

GNU General Public Licence: https://en.wikipedia.org/wiki/Gpl

nothugly.xsl

By Vidar Hokstad and Ryan Shea; Contributions by Jonas Tingborn, Earl Cummings, Michael Kennedy (Graphviz 2.20.2 compatibility, bug fixes, testing, lots of gradients)

Copyright (c) 2009 Vidar Hokstad

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.

MIT license: https://en.wikipedia.org/wiki/MIT_License

Contributors

Thanks goes to these wonderful people (emoji key):


Dave Burt

πŸ’»

obruening

πŸ’»

Chip Malice

πŸ’»

Stefan StΓΌben

πŸ’»

oupo

πŸ’»

Gregoire Lejeune

πŸ’» 🎨 πŸ“–

Markus Hauck

πŸ’»

Khalil Fazal

πŸ’»

Kenichi Kamiya

πŸ’»

Neven Has

πŸ’»

Andrew

πŸ’»

Daniel Zollinger

πŸ’»

Guilherme Simoes

πŸ’»

Oleg Orlov

πŸ’»

Gabe Kopley

πŸ’»

Jake Goulding

πŸ’»

hirochachacha

πŸ’»

ronen barzel

πŸ’»

Jamison Dance

πŸ’» πŸ“–

Joseph Anthony Pasquale Holsten

πŸ’»

Miguel Cabrera

πŸ’»

Mike Fiedler

πŸ’»

Nathan Long

πŸ’» πŸ“–

Olle Jonsson

πŸ’» πŸ“–

Postmodern

πŸ’»

Robert Reiz

πŸ’»

GΓΆran Bodenschatz

πŸ’»

SHIBATA Hiroshi

πŸ’»

moracca

πŸ’»

TPei

πŸ“–

Villu Orav

πŸ“–

David RodrΓ­guez

πŸ’» πŸ“¦

This project follows the all-contributors specification. Contributions of any kind welcome!