On Sat, Nov 15, 2014 at 6:36 PM, Gábor Csárdi <address@hidden> wrote:
On Sat, Nov 15, 2014 at 6:56 AM, Fatemeh a <address@hidden> 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
Gaborthank you in advance,fatemeh--regardsF..Aᐧ
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regards
F..A