Re: [igraph] add vertex label shortest path

[Tamas Nepusz]

Hi Joe,

Assuming that your graph is y and it has a "name" attribute containing the
vertex names, V(y)$name gives you the name of each vertex. You can then
index this list with the first column of y_s to remap the indices to names:

y_s[,1] <- V(y)$name[y_s[,1]]

Similarly for the second column:

y_s[,2] <- V(y)$name[y_s[,2]]

-- 
T.

On 06/29/2011 02:52 PM, joe j wrote:
> #code for generating shortest path matrix and creating a 3 columns
> y_s<-shortest.paths(y,  weights = NULL)
> y_s <- melt(y_s)[melt(upper.tri(y_s))$value,]
> names(y_s) <- c("vertex1", "vertex2", "shortestpath")
>