[R] Hierarchical Diagram of Networks in sna or otherwise?

[jebyrnes]

Nearly.  The algorithm turns up slightly different graphs each time (and
set.seed doesn't seem to make it consistent) and periodically chokes.  But
better than what I had.  Hrm.  I don't know much about the algorithm
graphviz uses for dot.  Do you have a reference on hand?  If it's simple,
I'd be willing to take a whack at it.


Gábor Csárdi-2 wrote:
> 
> Jarrett,
> 
> the 'igraph' package has a layout called layout.reingold.tilford that
> is designed for trees, there is a slight chance that it is good enough
> for you.
> 
> Best,
> Gabor
> 
> On Wed, Apr 29, 2009 at 10:11 PM, jebyrnes <byrnes at msi.ucsb.edu> wrote:
>>
>> I've been using sna to work with some networks, and am trying to
>> visualize
>> them easily.  My networks are hierarchical (food webs).  All of the
>> layout
>> engines I've tried with gplot don't seem to plot hierarchical networks,
>> as
>> one would using dot from graphviz.  While I could do all of this by
>> outputting to dotfiles and running it through graphviz, the graphics I
>> get
>> from R are much cleaner, and more easily integrated into my analyses.
>>
>> Is there any good way to diagram a hierarchical network in R, either with
>> the sna library or otherwise?  It strikes me that at least the Netindices
>> package can calculate trophic levels.  Could this be used for node
>> placement?
>>
>>
>> -Jarrett
>> --
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>>
> 
> 
> 
> -- 
> Gabor Csardi <Gabor.Csardi at unil.ch>     UNIL DGM
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 
> 

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