Graphviz FFI

Ruby bindings for libcgraph and libgvc (Graphviz) using FFI.

Installation

Add this line to your application's Gemfile:

gem 'gv'

And then execute:

$ bundle

Or install it yourself as:

$ gem install gv

Usage

Create new graph:

require 'gv'

graph = GV::Graph.open 'g'
graph.edge 'e', graph.node('A'), graph.node('B', shape: 'polygon', label: graph.html('<b>bold</b>'))
# render to string
graph.render 'png'

# or to a file
graph.write 'result.png'

Result

Load existing graph from .dot file:

require 'gv'

graph = GV::Graph.load File.open('g.dot')

# render graph
graph.render

See the documentation for details.

Contributing

1. Fork it ( https://github.com/furunkel/gv/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request