graphviz

Well, I don't know if you know about simpleontology module for Drupal 6.x, this module work with concepts, relations, tag and properties, this work with inferences.
The owner of this project is a chinesse student who published his document in chinesse language.
Well this project not is my owner.
This module is available at: http://code.google.com/p/simpleontology/
Pre requisites

• graphviz

There is an error in utils.php file under src directory at line 362, here there is a line with (%s) parameter, this should be ('%s').

This little module produces graph diagrams out of workflows, useful for documentation purposes.

It currently generates two distinct kinds of graphs:
* One for the workflow definition, showing all workflow states, the
transitions linking them, and the roles allowed to perform those
transitions.
* One for a workflow instance history, i.e. the path that a workflow
took for a specific node. Here, the graph shows all state transitions
that occurred on the node, including the timestamp and the users who
performed those transitions.

It's pretty raw for the time being, especially when it comes to controlling the generated graph. Enthusiasts are welcome!

Check it out: http://drupal.org/project/workflow_graph

I've patched workflow-4.7.x-1.0 to add a "graph" action to the workflow settings page. This action generates a Graphviz DOT file representing the states as nodes and transitions as edges, with edge labels describing the roles performing the transitions. The function then invokes the Graphviz dot command to generate a PNG image of the graph. The function uses a PHP class that encapsulates the Graphviz generation, taken from the Mantis bug tracker (which is also GPL'd).

Some installation notes:

Here are two finished graph visualization what represents two large community sites:

• www.hup.hu
• 2006.planet-soc.com

These are the newest results of my work.