Intersection of vertex sequences
Usage
# S3 method for class 'igraph.vs'
intersection(...)Value
A vertex sequence that contains vertices that appear in all given sequences, each vertex exactly once.
Details
They must belong to the same graph. Note that this function has ‘set’ semantics and the multiplicity of vertices is lost in the result.
See also
Other vertex and edge sequence operations:
c.igraph.es(),
c.igraph.vs(),
difference.igraph.es(),
difference.igraph.vs(),
igraph-es-indexing,
igraph-es-indexing2,
igraph-vs-indexing,
igraph-vs-indexing2,
intersection.igraph.es(),
rev.igraph.es(),
rev.igraph.vs(),
union.igraph.es(),
union.igraph.vs(),
unique.igraph.es(),
unique.igraph.vs()
Examples
g <- make_(ring(10), with_vertex_(name = LETTERS[1:10]))
intersection(E(g)[1:6], E(g)[5:9])
#> + 2/10 edges from 77ffb3b (vertex names):
#> [1] E--F F--G