igraph-help
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [igraph] extracting lists


From: Thiago M. Venancio
Subject: Re: [igraph] extracting lists
Date: Tue, 27 Jan 2009 13:11:53 -0500

Thanks Gabor. It worked perfectly.

A related question: How can one export the edge labels ?
There is no attribute name in edges

I would like to recover the data like it appear when querying:
NODE1   -- NODE2

Best,

Thiago

On Tue, Jan 27, 2009 at 3:36 AM, Gábor Csárdi <address@hidden> wrote:
V(g)$name gives the vertex names.

G.

On Tue, Jan 27, 2009 at 12:46 AM, Thiago M. Venancio
<address@hidden> wrote:
> Hi,
>
> The file graph.txt is a ncol format graph.
> I got a clue here. What happens is that the V(graph) command returns an
> integer type data that starts in the position zero. So, the degree in deg[1]
> is relative to vec[0] vertex.
> I would like to transform the vec (integer type) to get a vector with node
> names (not numerical IDs). Every time I use as.vector and relative commands
> I get the numerical IDs and not the names.
>
> Hope you can help me now with the additional info provided.
>
> Thanks.
>
> Thiago
>
> On Mon, Jan 26, 2009 at 5:56 PM, Gábor Csárdi <address@hidden> wrote:
>>
>> On Mon, Jan 26, 2009 at 10:23 PM, Thiago M. Venancio
>> <address@hidden> wrote:
>> > Hi all,
>> >
>> > After loading the graph in R, I would like to extract the list with
>> > vertices
>> > names and their degrees.
>> > I know how to save both variables in vectors, however they seem to be in
>> > different orders. For example, the degree of the first element in the
>> > vector
>> > with vertices names is not allocated in the first position in the degree
>> > vector.
>> > Here is what I am doing:
>> >
>> > graph = read.graph("graph.txt", format="ncol")
>> > deg = degree(graph)
>> > vec = V(graph)
>>
>> Hi,
>>
>> it is hard to guess what is in 'graph.txt', but 'deg' and 'vec' are
>> "in order" here, i.e. deg[1] belongs to vec[1], etc.
>>
>> You need to give us a reproducible example to see what goes wrong for you.
>>
>> Gabor
>>
>> > Any help is appreciated.
>> >
>> > Best,
>> >
>> > Thiago
>> >
>> >
>> > _______________________________________________
>> > igraph-help mailing list
>> > address@hidden
>> > http://lists.nongnu.org/mailman/listinfo/igraph-help
>> >
>> >
>>
>>
>>
>> --
>> Gabor Csardi <address@hidden>     UNIL DGM
>>
>>
>> _______________________________________________
>> igraph-help mailing list
>> address@hidden
>> http://lists.nongnu.org/mailman/listinfo/igraph-help
>
>
>
>
> _______________________________________________
> igraph-help mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/igraph-help
>
>



--
Gabor Csardi <address@hidden>     UNIL DGM


_______________________________________________
igraph-help mailing list
address@hidden
http://lists.nongnu.org/mailman/listinfo/igraph-help




reply via email to

[Prev in Thread] Current Thread [Next in Thread]