Value Graph Transformation

A simple framework for manipulating Directed Acyclic Graphs (DAG) for the use of transforming models of functions and values.

Source code at

Documentation at

It is written in Ruby and uses Bundler for dependency management. After checking out the repo, run bin/setup to install dependencies.

Execute bundle exec rake doc to generate specs and documentation. To generate the diagrams for the specs in HTML format you also need to install Graphviz.


  1. Fork it ( )
  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