OK thanks,
but how do you delete the edges from the plot. When I plot(g) after the command
delete, it does not remove the edges from the graph
also, I could not find a 'legend' function for igraph. Should we do them 'by
hand'?
thanks and sorry for these trivial questions,
best,
David Biau
>________________________________
> De : Gábor Csárdi <[email protected]>
>À : Biau David <[email protected]>; Help for igraph users
><[email protected]>
>Envoyé le : Samedi 12 janvier 2013 17h15
>Objet : Re: [igraph] igraph: how to select specific edges
>
>
>On Sat, Jan 12, 2013 at 10:36 AM, Biau David <[email protected]> wrote:
>
>Dear all,
>>
>>
>>I would like to remove some edges from my network. I would like to remove all
>>edges connecting one specific vertex (e.g., V(g)[type=='a']) to vertices
>>which share a specific characteristic which I have identified (e.g.,
>>V(g)[type=='b']) . I haven't found the way to identify these edges.
>>
>>
>>Any idea?
>
>
>See ?iterators:
>
>
> ‘inc’ takes a vertex sequence as an argument and returns ‘TRUE’
> for edges which have an incident vertex in it.
>
>
>E.g.
>
>
>library(igraph)
>g <- graph.ring(10)
>E(g)[inc(1)]
># Edge sequence:
>#
># [1] 2 -- 1
># [10] 10 -- 1
>
>
>delete.edges(g, E(g)[inc(1)])
># IGRAPH U--- 10 8 -- Ring graph
># + attr: name (g/c), mutual (g/x), circular (g/x)
>
>
>G.
>
>
>>David Biau
>>
>>_______________________________________________
>>igraph-help mailing list
>>[email protected]
>>https://lists.nongnu.org/mailman/listinfo/igraph-help
>>
>>
>
>
>
>--
>Gabor Csardi <[email protected]> MTA KFKI RMKI
>
>
>
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