Re: [igraph] Nodes properties

[Tamas Nepusz]

Hi,

> How can i add properties to the nodes of a graph ? Iam using igraph with C
> language.
Please refer to http://igraph.org/c/doc/igraph-Attributes.html

> I want to add:
> 
> char *
> doubles
> int
> 
> and access by the adjacency matrix structure.  Is there any doc to this ?
igraph does not use adjacency matrices to represent a graph. If you want to
retrieve an attribute corresponding to an edge, you have to query the ID of the
edge first using igraph_get_eid() and then retrieve the attribute of interest
using igraph_cattribute_EAN() for numeric attributes, igraph_cattribute_EAS()
for string attributes, or igraph_cattribute_EAB() for booleans.

-- 
T.