Ok thanks, it works. I tried the legend() but it didn't work as expected. I
will work on it. Congrats for your package, it is just great!
David Biau
>________________________________
> De : Gábor Csárdi <[email protected]>
>À : Biau David <[email protected]>
>Cc : igraph <[email protected]>
>Envoyé le : Samedi 12 janvier 2013 18h27
>Objet : Re: [igraph] igraph: how to select specific edges
>
>
>On Sat, Jan 12, 2013 at 11:35 AM, Biau David <[email protected]> wrote:
>
>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
>>
>
>
>It was included in my example. Here it is again, together with the plot:
>
>
>library(igraph)
>g <- graph.ring(10)
>g <- delete.edges(g, E(g)[inc(1)])
>
>plot(g)
>
>
>also, I could not find a 'legend' function for igraph. Should we do them 'by
>hand'?
>>
>
>
>You can use the "regular" legend() function I believe.
>
>
>G.
>
>
>>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
>>>
>>>
>>>
>
>
>
>--
>Gabor Csardi <[email protected]> MTA KFKI RMKI
>
>
>
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