A HMM can be converted to a dot file using a HmmDrawerDot
class.
If no class has been designed for the particular type of observation one is using, than the generic GenericHmmDrawerDot
class can be used.
A HMM can be converted using a command such as:
(new GenericHmmDrawerDot()).write(hmm, "hmm.dot");
The second argument is the filename (possibly with a path).
This file can be converted to a PostScript file using the graphViz
tool:
dot -Tps hmm.dot -o hmm.ps