On Sat, Nov 15, 2014 at 6:36 PM, Gábor Csárdi <[email protected]> wrote:
> On Sat, Nov 15, 2014 at 6:56 AM, Fatemeh a <[email protected]> wrote: > >> Hi, >> I would like to get the neighborhood of each vertex and get the community >> membership of each of them and the size of the each community which each >> vertex belong to , please consider this example : >> >> karate <- graph.famous("Zachary") >> karate <-as.matrix(karate) >> > > What is the point of this line? > > yes,sorry ,this line (karate <-as.matrix(karate) ) has no point > wckarate <- walktrap.community(karate) >> neigh_com >> <-sapply(graph.neighborhood(karate,1,nodes=V(karate)),function(g,x) { >> membership(wckarate)[V(g)] }) >> neigh_size <-sapply(graph.neighborhood(karate,1,nodes=V(karate)), >> function(g) { >> sizes(wckarate)[membership(wckarate)[V(g)] }) >> > > This gives me: > Error: unexpected '}' in: > "neigh_size <-sapply(graph.neighborhood(karate,1,nodes=V(karate)), > function(g) { > sizes(wckarate)[membership(wckarate)[V(g)] }" > sorry for that , this is what I used : neigh_size <-sapply(graph.neighborhood(karate,1,nodes=V(karate)), function(g) { sizes(wckarate)[membership(wckarate)[V(g)]] }) > >> >> the problem is that it is working with the index rather than the each >> vertex id itself, and when I use graph.neighborhood it will index each >> vertex all over again so it is all wrong how to avoid this ? >> > > Yes, this is very inconvenient, and will be fixed in the next major > release. Until then, you can just index V(karate)$name with the numeric ids > to get the symbolic ids. > thank you so much this is what I done and works fine : library(igraph) karate <- graph.famous("Zachary") wckarate <- walktrap.community(karate) V(karate)$name<-V(karate) V(karate)$community<-membership(wckarate) V(karate)$size<-sizes(wckarate)[membership(wckarate)] graph_neighbours<-graph.neighborhood(karate,1,nodes=V(karate)) for(i in 1:vcount(karate)) { write.graph(graph_neighbours[[i]],file=c(as.character(V(karate)$name[i])),format="dot") } I will really appreciate if you could help me with this as well : after getting each graph neighbours I wish I could have a csv of file of all like this: Node community size Node Community Neighbours community size Neighbours community Neighbours name node name 7 2 9 1 2 31 7 2 7 2 9 31 7 2 9 3 33 31 7 2 9 3 34 31 if I am not wrong the only format which keep all the attributes is "dot" butis there any way to have a csv file like this ? and if not is there any way to write them in a single file as my own graph is really big ? thank you so much for all your helps, fatemeh > > Gabor > > >> >> thank you in advance, >> fatemeh >> >> -- >> regards >> F..A >> ᐧ >> >> _______________________________________________ >> igraph-help mailing list >> [email protected] >> https://lists.nongnu.org/mailman/listinfo/igraph-help >> >> > > _______________________________________________ > igraph-help mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/igraph-help > > -- regards F..A
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