Re: [igraph] Namespaces and GraphML

[Robin Müller-Bady]

Dear Tamás,

thank you very much for that quick help!
Indeed, I use a Java tool that generates the graphml files. This tool 
(JAXB in Java) created the files by using the graphml-xsd file, so I 
assumed them to be correct.
But in that case, I will try to manually look it up again, maybe 
something went wrong with the generation of the xml/java model.

In any case, thank you a lot for the implementation of the namespace fix!

Regards,

Robin

On 09/24/2014 10:10 PM, Tamas Nepusz wrote:
> Hello Robin,
>
> I was checking the GraphML file that you sent and I was wondering whether it is indeed a 
> valid GraphML file - after all, the root tag is simply <graphml> and not 
> <ns3:graphml> so it is not in the GraphML namespace. The GraphML primer states that 
> the root tag is also in the GraphML namespace [1]:
>
> "The second line contains the root-element element of a GraphML document: the 
> graphml element. The graphml element, like all other GraphML elements, belongs to 
> the namespace http://graphml.graphdrawing.org/xmlns.”
>
> [1] http://graphml.graphdrawing.org/primer/graphml-primer.html
>
> --
> T.
>
> On 23 September 2014 at 15:12:33, Robin Müller-Bady (address@hidden) wrote:
> > Hi there,
> >   
> > I am using igraph in order to read, process and write graphml files of
> > graphml version 1.1 (http://graphml.graphdrawing.org/xmlns/1.1/graphml.xsd).
> > I get the graphml files from a java generator and postpress them with
> > the igraph python interface.
> > The problem is, that the java graphml generator creates specific
> > namespaces in the files, e.g.
> > "xmlns:ns2="http://www.w3.org/1999/xlink"; " such that it results in a
> > file that looks like follows:
> >   
> >   
> > > xmlns:ns3="http://graphml.graphdrawing.org/xmlns";>
> >   
> >   
> >   
> >   
> >   
> >   
> >   
> >   
> >   
> > which is not readable by igraph anymore ("igraph._igraph.InternalError:
> > Error at foreign-graphml.c:1139: Graph index was too large, Invalid value").
> >   
> > I am currently using Debian Jessie with igraph 0.7.0 and Python 2.7.8.
> >   
> > You have any ideas on how to fix that without processing the file
> > through awk/sed?
> >   
> > Regards,
> >   
> > Robin
> >   
> >   
> > _______________________________________________
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> >