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Well, I hear two questions here. If you agree that the subgraph trick is fine, then your question might be "how many subgraphs" can Tulip handle? Many, many (we are working on other stuff were we need to consider 20 000 -- twenty thousands -- of them).

Or the problem might be just how many different colors do we have available? As many as RGB allows you to define -- but then there is a clear perception issue: just how many colors can a user usefully distinguish. I fear this might be around 7 - 10 (ask the ColorBrewer: http://colorbrewer2.org/).

Guy
--

Le 9 oct. 2013 à 07:20, Moses Boudourides a écrit :

> I thought so but the problem still exists: how would you bundle/merge
> TOO MANY "colors"? --M
> 
> On Wed, Oct 9, 2013 at 8:07 AM, Guy Melançon <[log in to unmask]> wrote:
>> Tulip again.
>> 
>> Form subgraphs. Bundle them separately. Merge edge coordinates into a single
>> layout. Voilà !
>> 
>> --
>> 
>> Le 9 oct. 2013 à 07:05, Moses Boudourides a écrit :
>> 
>> *****  To join INSNA, visit http://www.insna.org  *****
>> 
>> Incidentally, I was wondering, is there any algorithm for an edge
>> bundling of a multiplex network? Any ideas how to visualize bundled
>> multi-edges? Of course, by bundling separately edges of the same
>> "color" could do the job but the problem would arise if the number of
>> "colors" is very large. (For instance, think of Twitter hashtags.)
>> 
>> --Moses
>> 
>> On Wed, Oct 9, 2013 at 1:49 AM, Jesse Michael Fagan <[log in to unmask]>
>> wrote:
>> 
>> ***** To join INSNA, visit http://www.insna.org *****
>> 
>> Tulip (http://tulip.labri.fr/TulipDrupal/) has a force directed edge
>> 
>> bundling layout implementation. Although I check every five minutes to see
>> 
>> if Gephi has implemented theirs yet.
>> 
>> 
>> -Jesse
>> 
>> 
>> 
>> On Tue, Oct 8, 2013 at 5:12 PM, Zachary P Neal <[log in to unmask]> wrote:
>> 
>> 
>> *****  To join INSNA, visit http://www.insna.org  *****
>> 
>> 
>> I have a large network for which I think an edge bundling layout might be
>> 
>> useful, but I can't seem to find any of these layouts implemented in the
>> 
>> standard visualization software (e.g. Vizone, Gephi, etc.).  There is
>> 
>> discussion of one such layout in Gephi here
>> 
>> (https://gephi.org/2012/gsoc-force-directed-edge-bundling/), but it doesn't
>> 
>> appear to be available yet.
>> 
>> 
>> If you know of any visualization software that offers an edge bundling
>> 
>> layout, I'd appreciate any suggestions.
>> 
>> 
>> Thanks,
>> 
>> Zachary
>> 
>> 
>> --
>> 
>> Zachary Neal, Assistant Professor
>> 
>> Michigan State University
>> 
>> Department of Sociology & Global Urban Studies Program
>> 
>> 316 Berkey Hall
>> 
>> East Lansing, MI 48824
>> 
>> http://www.msu.edu/~zpneal
>> 
>> 
>> http://www.routledge.com/books/details/9780415881425/
>> 
>> http://www.routledge.com/books/details/9780415997270/
>> 
>> 
>> _____________________________________________________________________
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>> _____________________________________________________________________
>> SOCNET is a service of INSNA, the professional association for social
>> network researchers (http://www.insna.org). To unsubscribe, send
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>> 
>> Guy Melançon
>> CNRS LaBRI UMR 5800
>> Université Bordeaux I
>> 351 Cours de la LibéŽration
>> F-33405 Cedex
>> http://www.labri.fr/perso/melancon/
>> T. +33 540008881
>> --
>> 
>> 
>> 
>> 

Guy Melançon
CNRS LaBRI UMR 5800
Université Bordeaux I
351 Cours de la LibéŽration
F-33405 Cedex
http://www.labri.fr/perso/melancon/
T. +33 540008881
--





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