Re: [igraph] R: vertex attributes in bipartite graphs for only one vertex type

[Michael Gastner]

Dear Tamas,

Many thanks for your reply! Also thank you for explaining that igraph
does not check whether the topology is really bipartite. I had been
wondering about that too.

Michael

>> Is there some way to create a vertex attribute that is only attached
>> to one vertex type in a bipartite graph (in this example the vertices
>> for which V(g)$type == FALSE)?
>>
>Unfortunately there's no way to do that; this is because bipartite graphs
>in igraph are simply "normal" graphs with a "type" vertex attribute and an
>additional property that edges never go between vertices of the same type.
>(But this is not even enforced; you can create such an edge if you really
>want to). So, for the time being you need to settle with having NA as the
>"gender" for the company vertices. Try to think about NA as "not
>applicable", which actually sort-of-makes sense for companies :)