Use this if you are using igraph from R
Intersection of vertex sequences
## S3 method for class 'igraph.vs' intersection(...)
... |
The vertex sequences to take the intersection of. |
They must belong to the same graph. Note that this function has ‘set’ semantics and the multiplicity of vertices is lost in the result.
A vertex sequence that contains vertices that appear in all given sequences, each vertex exactly once.
Other vertex and edge sequence operations: c.igraph.es,
c.igraph.vs,
difference.igraph.es,
difference.igraph.vs,
igraph-es-indexing2,
igraph-es-indexing,
igraph-vs-indexing2,
igraph-vs-indexing,
intersection.igraph.es,
rev.igraph.es, rev.igraph.vs,
union.igraph.es,
union.igraph.vs,
unique.igraph.es,
unique.igraph.vs
g <- make_(ring(10), with_vertex_(name = LETTERS[1:10])) intersection(E(g)[1:6], E(g)[5:9])