Re: [igraph] Selecting edges in C

[Gábor Csárdi]

Matthew,

perhaps the simplest is to query all edges that have an edge to
'given_vertex' with igraph_adjacent() and then check their source
vertex with igraph_edge().

Best,
Gabor

On Thu, Feb 18, 2010 at 4:33 PM, Matthew Walker
<address@hidden> wrote:
> Hi,
>
> I am a bit stumped.  I would like to select all edges that go from a set of
> vertices to given a vertex.  In R, I can do it with:
>
> edges <- E(graph)[ vertices_in_set %->% given_vertex]
>
> Can you tell me what functions I can use to do the same in C?  I found
> igraph_es_fromto(), but it has not yet been implemented.  I have tried to
> understand the R code in iterators.R but I haven't been very successful.
>
> Can someone show me what I'm missing?
>
> Thanks in advance!
>
> Matthew
>
>
> _______________________________________________
> igraph-help mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/igraph-help
>



-- 
Gabor Csardi <address@hidden>     UNIL DGM