Use this if you are using igraph from R
Convert a vertex or edge sequence to an ordinary vector
as_ids(seq) ## S3 method for class 'igraph.vs' as_ids(seq) ## S3 method for class 'igraph.es' as_ids(seq)
The vertex or edge sequence.
For graphs without names, a numeric vector is returned, containing the internal numeric vertex or edge ids.
For graphs with names, and vertex sequences, the vertex names are returned in a character vector.
For graphs with names and edge sequences, a character vector is
returned, with the ‘bar’ notation:
a|b means an edge from
a to vertex
A character or numeric vector, see details below.
g <- make_ring(10) as_ids(V(g)) as_ids(E(g)) V(g)$name <- letters[1:10] as_ids(V(g)) as_ids(E(g))