[igraph] GML file reader limitations

[Thomas Gorochowski]

Hi there,

I have been attempting to use the C attribute handler within my  
project and require that some graph level attributes (set using  
SETGAN) can be saved and loaded from file. I was hoping to use either  
the GML or GraphML file formats, and at first glance it appeared these  
support my needs. However, after trying to load a graph containing  
graph level attributes I get the error that the attribute cannot be  
found:

Error at cattributes.c:967 :Unknown attribute, Invalid value.

The documentation also states that only 'Version' and 'graph' top  
level attributes are loaded for GML graphs but that I should contact  
the developers if this is found to be a major limitation. How would I  
go about adding support for arbitrary top level attributes as these  
are the only way I can properly store settings about the graph in  
general that can then be used by my program.

Many thanks for your help,

Tom
--
T.E. Gorochowski
University of Bristol, Centre for Complexity Sciences (BCCS)
http://www.chofski.co.uk, address@hidden