Re: [igraph] Selecting vertices for centrality analysis in R

[Gábor Csárdi]

Hi Jorge,

On Mon, Dec 17, 2012 at 10:22 AM, Jorge Gil <address@hidden> wrote:

[...]

    bet<-betweenness(lg,v=V(lg)[name %in% lo$road_id],directed=F,normalized=T,weights=E(lg)$metric)

This seems to be bug. The workaround is to calculate the betweenness for all vertices and then select the ones you want, manually. (It won't be any slower, betweenness is calculated for all vertices anyway, even if you only request a single vertex.)

 

[...]

As a final point: I would like the weight to be selected dynamically so that I can repeat the analysis in a loop for different weights. How can I refer to the Edge attributes dynamically, using an index for example.

get.edge.attribute(lg, "weight1")

get.edge.attribute(lg, "weight2")

etc.

Thanks for the bug report!

Best,

Gabor

 

Thank you in advance,
Jorge

--
Jorge Gil
PhD Candidate

TU Delft / Faculty of Architecture
Department of Urbanism
Chair of Spatial Planning and Strategy

Julianalaan 134
2628 BL Delft
P.O. Box 5043
2600 GA Delft
The Netherlands

www.tudelft.nl


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Gabor Csardi <address@hidden>     MTA KFKI RMKI