Say I have this example graph, i want to find the edges connected to vertex 'a'
d <- data.frame(p1=c('a', 'a', 'a', 'b', 'b', 'b', 'c', 'c', 'd'),
p2=c('b', 'c', 'd', 'c', 'd', 'e', 'd', 'e', 'e'))
library(igraph)
g <- graph.data.frame(d, directed=FALSE)
print(g, e=TRUE, v=TRUE)
I can easily find a vertex:
V(g)[V(g)$name == 'a' ]
But i need to reference all the edges connected to the vertex 'a'.