[igraph] assign value to node using neighbor attributes

[mathias kuhnt]

Hi!

is it possible to assign in a simple way attributes to a node that 
depend on the attributes of all neighbors?

may be this explains what I want even if it does not work this way:

V(g)$an<-mean(V(g)[nei(???)]$a,na.rm=T)


Thanks for your help,
Mathias