***** To join INSNA, visit http://www.insna.org ***** Thanks for all the replies on this. I think between JUNG (which I'd mistakenly assumed from a look years ago was purely a visualisation library), and R, of which I was unaware, I have want I want. Again, thanks! One last related question before I disappear off to the JUNG and R lists for a while -- does anyone have an implementation (any language, but would be nice if it was compatible with either of the above, or Perl), of the keyplayer algorithms (esp KPP-2 and variants) described in Steve Borgatti's paper at (http://www.analytictech.com/borgatti/papers/borgatti%20-%20NAS%20-%20The%20Key%20Player%20Problem%203.doc) and as implemented in his keyplayer software? While the algorithm is described amply in the paper, my programming skills and understanding of it don't intersect at a point where I can do it (easily) from scratch without something a bit higher level or concrete to start from! Again many thanks -- this is one of the highest-value mailing lists I've ever lurked on! - Darrell _____________________________________________________________________ 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.