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Re: [igraph] Directed edgelist in ncol format?
From: |
Tamás Nepusz |
Subject: |
Re: [igraph] Directed edgelist in ncol format? |
Date: |
Sun, 9 Jan 2011 11:27:40 +0100 |
> In the documentation I found that the ncol format works only with undirected
> networks
Well, to be more precise: the NCOL format does not convey information about the
directedness of the network; in other words, you have to know whether your
network is directed or undirected when you load it from NCOL format. But
otherwise you can simply save a directed graph in NCOL format if you pass
directed=TRUE to read.graph when you load it back. E.g.:
> g <- barabasi.game(100, 2)
> is.directed(g)
[1] TRUE
> write.graph(g, "test.ncol", format="ncol")
> g2 <- read.graph("test.ncol", directed=TRUE)
> graph.isomorphic(g, g2)
[1] TRUE
So probably the simplest thing you can do is: g <- read.graph("your_file.ncol",
directed=TRUE)
--
T.