igraph (version 1.0.0)

subcomponent: In- or out- component of a vertex

Description

Finds all vertices reachable from a given vertex, or the opposite: all vertices from which a given vertex is reachable via a directed path.

Usage

subcomponent(graph, v, mode = c("all", "out", "in"))

Arguments

graph

The graph to analyze.

v

The vertex to start the search from.

mode

Character string, either in, out or all. If in all vertices from which v is reachable are listed. If out all vertices reachable from v are retur

Value

• Numeric vector, the ids of the vertices in the same component as v.

Details

A breadh-first search is conducted starting from vertex v.

See Also

components

Examples

g <- sample_gnp(100, 1/200)
subcomponent(g, 1, "in")
subcomponent(g, 1, "out")
subcomponent(g, 1, "all")