Re: [igraph] Connected Components

[Tamas Nepusz]

> Hence cluster number three is the biggest. Since counting starts at 0
> in igraph, this means that the connected component consists of the
> vertices:
>
> selected_vertices <- V(g)[which(g_clusters$membership == 2)]
This is another common catch with igraph in R: vertex IDs also start  
from zero, so you'll have to subtract 1 from the vertex IDs as well:

selected_vertices <- V(g)[which(g_clusters$membership == 2) - 1]

--
Tamas