[R] Weighted networks and multigraphs

[Robert Gentleman]

Hi,
  Some implementations are available in the packages graph and RBGL from 
Bioconductor (www.bioconductor.org). I think you will find that they do 
what you would like, but let the maintainers know if not.

  best wishes
    Robert




Wilson, Andrew wrote:
> I would like to apply network measures (such as betweenness centrality,
> upper boundedness, etc.) to a weighted graph with non-integer weights,
> defined by a euclidean distance matrix.  The package sna provides the
> measures that I want to use, but seems only to operate on binary graphs.
> I have read work by Mark Newman
> (http://aps.arxiv.org/abs/cond-mat/0407503/), who suggests that a
> weighted graph can be transformed into an unweighted multigraph, to
> which such measures can be applied.  It seems that the package giRaph
> contains a function to handle multigraphs, but there is no example in
> the manual to show how it is used.  I am also not sure whether this
> multigraph structure can be used as input into the relevant functions in
> the sna package.  Can anyone advise?
> 
> Many thanks,
> Andrew Wilson
> 
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-- 
Robert Gentleman, PhD
Program in Computational Biology
Division of Public Health Sciences
Fred Hutchinson Cancer Research Center
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rgentlem at fhcrc.org