[igraph] Accessing/setting all vertex attributes at the same time

[Florian Markowetz]

Hi igraph-list,

I am using the R interface to igraph.
R version 2.12.0 (2010-10-15)
Platform: i386-apple-darwin9.8.0/i386 (32-bit)
igraph_0.5.5

Now here is my problem: I'm having a graph and several attributes for each
vertex. I want to set and access all attributes at the same time, without
using a loop or an apply.

Here is a simple example. Imagine the following was my data (in reality my
graph has ~3000 nodes and each node has ~1000 attributes):

> g <- barabasi.game(10)
> vertexAnno <- data.frame(
    alias=LETTERS[1:10],
    domain=letters[1:10],
    value=rnorm(10)
    )

How do I set all vertex attributes in one go and avoid something like:
> for (i in colnames(vertexAnno)) g <-
set.vertex.attribute(g,i,value=vertexAnno[,i])

And once the attributes are set, how do I retrieve them again as one
dataframe? I don't want to loop over get.vertex.attribute().

Thanks a lot for your help!
Florian

PS: When I tried checking the email archives I only got to an
'unavailable'-page. So I apologize if this question got answered recently.

-- 
Florian Markowetz

Cancer Research UK 
Cambridge Research Institute
Li Ka Shing Centre
Robinson Way, Cambridge, CB2 0RE, UK

phone: +44 (0) 1223 40 4315
email: address@hidden
web  : http://www.markowetzlab.org
skype: florian.markowetz


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