The hepmc2dot.py scripts converts ASCII files generated by HepMC::IO_GenEvent to the common DOT graph format. It is tested only for Python 2.7 at this point.

HepMC is a High Energy Physics package for storing Monte Carlo event records. These records can typically be represented in a tree structure, where particles are edges and interaction vertices are nodes.

The official HepMC documentation is at: http://hepmc.web.cern.ch/hepmc/

Convert HepMC ASCII file hepmcfile.txt to DOT graph and store there result in dotfile.dot:

hepmc2dot.py hepmcfile.txt dotfile.dot

The source repository is on GitHub.

Documentation can be found on Read the Docs.