Union of vertex sequences
Usage
# S3 method for igraph.vs
union(...)
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. (This is to match the behavior of the based unique
function.)
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()
,
intersection.igraph.vs()
,
rev.igraph.es()
,
rev.igraph.vs()
,
union.igraph.es()
,
unique.igraph.es()
,
unique.igraph.vs()