Jagdish,
Take a look at Graphviz at the att.research.com site. It has several strategies
for performing the layout (this is not a trivial task).
Once you look at the examples that come with the package, you can see how easy
it is to write a function to create the input scripts required by the dot (or
dotty, or neato) programs. You can do directed graphs, which try to minimize
the number of edge crossings (for highest readability). You can also do
undirected graphs, and the neato program uses an energy-type measure to produce
the best 2-dimensional layout.
You might also want to look at Tom Sawyer software, which has more interactive
editing capabilities.
- Kenton
---------------------- Forwarded by Kenton Juhlin-KD/PGI on 07/30/2001 07:32 AM
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From: "J. S. Gangolly" <gangolly@csc.albany.edu> on 07/28/2001 03:51 AM GMT
"J. S. Gangolly" To: s-news@wubios.wustl.edu
<gangolly@csc.albany.edu> Cc: (bcc: Kenton Juhlin-KD/PGI)
Subject: [S] Directed graph from an adjacency
matrix.
07/27/2001 11:51 PM
Is there any function to draw a directed (or any graph for that matter)
from an adjacency matrix in S-Plus?
Thanks for help.
Jagdish
--
Jagdish S. Gangolly, (j.gangolly@albany.edu)
State University of New York at Albany, Albany, NY 12222.
Phone: (518) 442-4949 Fax: (707) 897-0601
URL: http://www.albany.edu/acc/gangolly
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