R help - Jul 2011 - superimposing network graphs

Dear all,

I have a undirected network (g), representing all the sexual relationships that
ever existed in a model community.
I also have a directed edgelist (e) which is a subset of the edgelist of g. e
represents the transmission pathway of HIV.
Now I would like to superimpose the picture of the sexual relationships with
arrows in a different colour, to indicate where in the network HIV was
transmitted.

Any ideas on how to do this?
Many thanks,

Wim



Wim Delva    MD, PhD
International Centre for Reproductive Health
Ghent University, Belgium
www.icrh.org

South African Centre for Epidemiological Modelling and Analysis
Stellenbosch University, South Africa
www.sacema.com
epi update: www. sacemaquarterly.com

Tel:		+27 21 808 27 79 (work)
Cell:	+27 72 842 82 33

> Date: Wed, 6 Jul 2011 13:10:14 +0200
> To: r-help at r-project.org
> CC: buttsc at uci.edu
> Subject: [R] superimposing network graphs
>
> Dear all,
>
> I have a undirected network (g), representing all the sexual relationships
that ever existed in a model community.
> I also have a directed edgelist (e) which is a subset of the edgelist of g.
e represents the transmission pathway of HIV.
> Now I would like to superimpose the picture of the sexual relationships
with arrows in a different colour, to indicate where in the network HIV was
transmitted.

If you can't find an R answer, I've found that "dot" from
graphviz is really helpful. It should not be too hard to generate
the source code from your raw data file or R but others may have a more R
answer. Package sna may be helpful for
an R-only approach. 



>
> Any ideas on how to do this?
> Many thanks,
>
> Wim
>
>
>
> Wim Delva MD, PhD
> International Centre for Reproductive Health
> Ghent University, Belgium
> www.icrh.org
>
> South African Centre for Epidemiological Modelling and Analysis
> Stellenbosch University, South Africa
> www.sacema.com
> epi update: www. sacemaquarterly.com
>
> Tel: +27 21 808 27 79 (work)
> Cell: +27 72 842 82 33
>
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