[igraph] signal diffusion and weighted networks

[Hermann Norpois]

Hello,

I have a non-directed weighted network and I want to know: What are the neighboruing vertices of a certain vertex. Of course, I can use graph.neighborhood but it does not take into account that the edges are weighted. I am looking for a method that reflects how a signal "diffuses" if it starts at a certain vertex. Could anybody give me a hint?

Thanks

Hermann