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Re: [igraph] plot: edges cross vertexes

From: Gábor Csárdi
Subject: Re: [igraph] plot: edges cross vertexes
Date: Mon, 15 Oct 2012 13:43:07 -0400

On Mon, Oct 15, 2012 at 1:19 PM, Sam Steingold <address@hidden> wrote:
> Error in write.graph.dot(graph, file, ...) :
>   At rinterface.c:4125 : Cannot write edgelist, File operation error
> IIRC, this is because write.graph does not support "~".
> Yes, I can open/close files manually, but this is quite ugly!

Indeed. Here is a bug report for it:

The thing is this is OSX specific, because it does not have fmemopen
and open_memstream in its libc. A workaround is to prefix your file
name with "file://" and then igraph uses a temporary file to create
your file, and the final file is created via an R function that
expands '~':

g <- graph.ring(10)
write.graph(g, file="file://~/test.txt", format="edgelist")



Gabor Csardi <address@hidden>     MTA KFKI RMKI

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