Graph visualization (automatic layout) functions
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This directory contains code to automatically layout and visualize
graphs. It provides a matlab interface to the graphviz program:
  http://www.research.att.com/sw/tools/graphviz
Written by Kevin Murphy, Leon Peshkin, Tom Minka.

draw_graph was written by Ali Taylan Cemgil, and is entirely
self-contained matlab: it does not need graphviz, but produces lower
quality results. 
http://www.mbfys.kun.nl/~cemgil/matlab/layout.html

See also the following URLs for other graph layout programs:
 http://www.ics.uci.edu/~eppstein/gina/gdraw.html
 http://www.cwi.nl/InfoVisu/