Concatenate vertex sequences
# S3 method for class 'igraph.vs'
c(..., recursive = FALSE)A vertex sequence, the input sequences concatenated.
Other vertex and edge sequence operations:
c.igraph.es(),
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(),
union.igraph.vs(),
unique.igraph.es(),
unique.igraph.vs()