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Re: [igraph] Python's Graph.write_x producing empty files


From: Alacast
Subject: Re: [igraph] Python's Graph.write_x producing empty files
Date: Tue, 14 Aug 2012 15:05:36 +0100

Thanks! In the meantime, since I can use igraph to write the correct format, and pipe it to sys.stdout, what would be the best hack for me to pipe stdout to a file? It feels like another line of code could get the functionality I need for the moment.

On Tue, Aug 14, 2012 at 2:54 PM, Tamás Nepusz <address@hidden> wrote:
Hmm, this is weird, but at least it gives me a clue about where to look for bugs in my code. I'm still trying to find a RHEL machine where I could reproduce the issue.

--
T.


On Tuesday, 14 August 2012 at 15:53, Alacast wrote:

> Good idea!
>
> > > > g.write_pajek(sys.stdout)
> *Vertices 3
> *Edges
> 1 2
> 2 3
> > > > g.write(sys.stdout, format='net')
> > >
> >
>
> *Vertices 3
> *Edges
> 1 2
> 2 3
> > > > g.write(sys.stdout, format='graphml')
> > >
> >
>
> <?xml version="1.0" encoding="UTF-8"?>
> <graphml xmlns="http://graphml.graphdrawing.org/xmlns"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
> http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
> <!-- Created by igraph -->
> <graph id="G" edgedefault="undirected">
> <node id="n0">
> </node>
> <node id="n1">
> </node>
> <node id="n2">
> </node>
> <edge source="n0" target="n1">
> </edge>
> <edge source="n1" target="n2">
> </edge>
> </graph>
> </graphml>
>
>
> Thanks!
> On Mon, Aug 13, 2012 at 3:25 PM, Tamás Nepusz <address@hidden (mailto:address@hidden)> wrote:
> > Hi,
> >
> > Just out of curiosity: can you try whether g.write_pajek(sys.stdout) works or not?
> >
> > --
> > T.
> >
> >
> > On Monday, 13 August 2012 at 16:21, Alacast wrote:
> >
> > > Hi again, all. Does anyone have thoughts on what could be causing these files to be written without actually including any data on the network?
> > >
> > > Thanks!
> > >
> > > On Mon, Aug 6, 2012 at 11:14 PM, Alacast <address@hidden (mailto:address@hidden) (mailto:address@hidden)> wrote:
> > > > This is a Red Hat Linux 4.1.2-51 server, 64 bit. The examples I gave were on ipython with the -pylab setting. I've retested with plain Python, and it's the same story. The python versions I've tested are:
> > > > 2.7.2
> > > > 2.7.4 (Enthought distribution, version 7.3-1)
> > > >
> > > > Thanks!
> > > >
> > > > On Mon, Aug 6, 2012 at 8:34 PM, Tamás Nepusz <address@hidden (mailto:address@hidden) (mailto:address@hidden)> wrote:
> > > > > Dear Jeff,
> > > > >
> > > > > > All of these produce empty files, instead of something with information on the graph g. What am I doing wrong?
> > > > > Theoretically you are doing everything right, so I'm guessing that this is a platform-specific issue. What operating system are you using and which version of Python? Is it a 32-bit or a 64-bit machine?
> > > > >
> > > > > Best,
> > > > > Tamas
> > > > >
> > > > >
> > > > >
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> > >
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