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[igraph] Accessing names of vertices in R
From
:
Eric Sun
Subject
:
[igraph] Accessing names of vertices in R
Date
:
Mon, 25 Aug 2008 11:49:50 -0700
User-agent
:
Microsoft-Entourage/12.10.0.080409
Hi,
I’m using the igraph R interface, and would like to get a data frame of my vertex names.
I can get the names to display properly with V():
> V(graph)
Vertex sequence:
[1] "1209361284" "1336950007" "557545883" "687521888" "542248067" "551748864" "562264620" "1515360054" "567418719" "1270302894"
[11] "1341660709" "720760863" "710772149" "797316574" "577749289" "1072783645" "596842471" "1231004904" "1313210126" "593548471"
I want to do further computation with these names (i.e. merge), so it would be helpful to have these names in a data frame.
However, I can’t do that.
> data.frame(V(graph))
Error in as.data.frame.default(x[[i]], optional = TRUE) :
cannot coerce class "igraph.vs" into a data.frame
Nor can I use an iterator, since it doesn’t display the names:
> for (v in V(graph)) {print(v)}
[1] 0
[1] 1
[1] 2
[1] 3
[1] 4
[1] 5
[1] 6
[1] 7
[1] 8
...
Any ideas?
Thanks very much!
-Eric
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Re: [igraph] Accessing names of vertices in R
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Csardi Gabor
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2008/08/25
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