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Re: [igraph] Unable to save graphml file

From: Stephen Ray
Subject: Re: [igraph] Unable to save graphml file
Date: Fri, 11 Jan 2013 23:13:12 +0000

Thanks for the quick response.

write_ncol, and write_gml both result in empty files. Opening the existing 
empty file and writing the graph out results in an empty file still.

I am also seeing the python interpreter crash now. In the Windows application 
error log the following event is being logged:

Faulting application name: python.exe, version:, time stamp: 0x4f851387
Faulting module name: MSVCR90.dll, version: 9.0.30729.6161, time stamp: 
Exception code: 0xc0000417
Fault offset: 0x00069cf1
Faulting process id: 0x2fd4
Faulting application start time: 0x01cdf050590c1943
Faulting application path: C:\Python32\python.exe
Faulting module path: 
Report Id: a3f9b02b-5c43-11e2-b8e3-f0def17c2957

I am running on 64-bit windows by the way with Python 3.2 23-bit and igraph 
installed from python-igraph-0.6.win32-py3.2.msi.

I've been working through the tutorial on the igraph site and everything worked 
without a hitch up until trying to save graphs.

Steve R

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Tamás Nepusz
Sent: Friday, January 11, 2013 5:18 PM
To: Help for igraph users
Subject: Re: [igraph] Unable to save graphml file


Could be a bug but I'm not sure and unfortunately we don't have any Windows 7 
machines to test on. Can you please try it with other formats (e.g., 
write_ncol, write_gml and so on)? Does it work with them or do you get empty 

Also, can you please try this:

f = open("gf.graphml")


On 11 Jan 2013, at 23:13, Stephen Ray <address@hidden> wrote:

> My environment is Python 3.2, igraph 0.6, and Windows 7.
> The following code creates an empty file:
>     fg = igraph.Graph.Full(10)
>     fg.write_graphml("gf.graphml")
> I have tried opening a file directly but that has the same affect.
> Does anyone have any ideas of the reason for this?
> Stephen Ray
> Chief Technology Officer
> Cobb Systems Group, LLC
> Rockville Innovation Center
> 155 Gibbs Street
> Suite 514
> Rockville, MD 20850
> United States of America
> Office: 301-515-1230
> Cell: 240-888-6507
> _______________________________________________
> igraph-help mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/igraph-help

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