***** To join INSNA, visit http://www.insna.org ***** Thanks a lot to everybody who responded! SOCNET is always so wonderfully helpful. Looks like there are a whole lot of options for doing this. I am going to give a number of these a try. If I find that something works especially well for displaying these kinds of networks, I'll report back to the list. Andrei On Tue, May 17, 2011 at 5:21 AM, Carl Nordlund <[log in to unmask]>wrote: > Several years ago I experimented with spring-embedding algorithms and > wrote a couple of java applet. I have also written a C# (Windows) client > program to visualize the social network of the people attending my PhD > graduation party, but that one was just an ordinary 2d-open type without > calculating Kruskal stress indices. > > I did an applet prototype that allows data to be displayed in a variety of > spring-embedding ways - open 2d, open 3d, closed 2d (i.e. on the surface of > a sphere) - and they work well for dense, weighted networks with many nodes. > Also, the spring-embedders calculate Kruskal stress indices - although > spring-embedders generally doesn't arrive at the optimum minimum for stress, > you can tweak the parameters to minimize this value. > > At that time, I primarily worked with international trade flow data which > are also typically very dense and have huge value spans. > > The program is located here: > http://demesta.com/sph_dev/test2/ > > If you could send me your data, preferably in a syntax like this: > http://www.demesta.com/sph_dev/test2/data/migflows.txt > ...I can install it on the server so you can experiment with the applet to > see whether it yields any good output. > > Or a simple csv-textfile should also work - I can then convert into my > format. > > Yours, > Carl > > Dr Carl Nordlund > carl.nordlund(at)hek.lu.se > Human Ecology Division, Lund university > www.hek.lu.se > ------------------------------ > *Från:* Social Networks Discussion Forum [[log in to unmask]] för Andrei > Boutyline [[log in to unmask]] > *Skickat:* den 17 maj 2011 05:49 > *Till:* [log in to unmask] > *Ämne:* [SOCNET] Plotting weighted networks in R or Python? > > ***** To join INSNA, visit http://www.insna.org ***** Dear all, > > > I'm hoping somebody can point me to a good tool for laying out and plotting > weighted networks. In my data, every node is connect to every other node, > albeit with different tie strengths. So, a layout algorithm that doesn't > take weights into account will just give me a ball of nodes. Is there a > library for R or Python that can produce a more meaningful layout from such > data? Or, in the absence of a library, is there a standalone program? > > (By the way, the total number of nodes in my network under 150.) > > Thanks a lot! > Andrei > > -- > Andrei Boutyline > University of California, Berkeley > PhD Student, Sociology > www.ocf.berkeley.edu/~andrei <http://www.ocf.berkeley.edu/%7Eandrei> > _____________________________________________________________________ > 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. > -- Andrei Boutyline University of California, Berkeley PhD Student, Sociology www.ocf.berkeley.edu/~andrei _____________________________________________________________________ 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.