Download Rdoc (0.5.0) SVN gem What’s this? GraphvizR is graphviz adapter for Ruby, and it can: generate a graphviz dot file, generate an image file by means of utilizing graphviz, interprete rdot file and generate an image file, and, generate a graph image file in rails application as a rails plugin. How to install gem install graphviz_r Additionaly, if you want to use this in rails: script/plugin