***** To join INSNA, visit http://www.insna.org ***** On Mon, Jul 11, 2005 at 02:31:26PM -0500, Shannon Clark wrote: > Thanks. Pajek looks close to what I would need, however as I am looking > at commercial - not non-commercial uses it may not be an option. Commercial graph layout software is available, e.g., from yWorks (www.yworks.com, see yFiles package), ILOG (www.ilog.com), and Tom Sawyer Software (www.tomsawyer.com). The yFiles feature an implementation of one of the recent multi-level force-directed graph layout algorithms that can draw very large graphs in seconds. If you want to implement one yourself (non-trivial), this one is of high quality: Stefan Hachul and Michael Jünger Drawing Large Graphs with a Potential-Field-Based Multilevel Algorithm Proc. 12th Intl. Symp. Graph Drawing 2004 Lecture Notes in Computer Science vol. 3383, pp. 285- Springer, 2005 preprint: http://www.zaik.uni-koeln.de/~paper/preprints.html?show=zaik2004-472 A similar (though not quite as successful) method has recently been included in Mathematica. Regards, B. _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.insna.org). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.