as_ids {igraph}

Convert a vertex or edge sequence to an ordinary vector

Description

Convert a vertex or edge sequence to an ordinary vector

Usage

as_ids(seq)

## S3 method for class 'igraph.vs'
as_ids(seq)

## S3 method for class 'igraph.es'
as_ids(seq)

Arguments

seq

The vertex or edge sequence.

Details

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 vertex a to vertex b.

Value

A character or numeric vector, see details below.

See Also

Other vertex and edge sequences: E(), V(), igraph-es-attributes, igraph-es-indexing, igraph-es-indexing2, igraph-vs-attributes, igraph-vs-indexing, igraph-vs-indexing2, print.igraph.es(), print.igraph.vs()

Examples

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))