RBGL (version 1.48.1)

strongComp: Identify Strongly Connected Components

Description

The strongly connected components in a directed graph are identified and returned as a list.

Usage

strongComp(g)

Arguments

g

graph with edgemode “directed”.

Value

A list whose length is the number of strongly connected components in g. Each element of the list is a vector of the node labels for the nodes in that component.

Details

Tarjan's algorithm is used to determine all strongly connected components of a directed graph.

References

Boost Graph Library ( www.boost.org/libs/graph/doc/index.html )

The Boost Graph Library: User Guide and Reference Manual; by Jeremy G. Siek, Lie-Quan Lee, and Andrew Lumsdaine; (Addison-Wesley, Pearson Education Inc., 2002), xxiv+321pp. ISBN 0-201-72914-8

See Also

connComp,connectedComp, same.component

Examples

con <- file(system.file("XML/kmstEx.gxl",package="RBGL"), open="r")
km <- fromGXL(con)
close(con)

km<- graph::addNode(c("F","G","H"), km)
km<- addEdge("G", "H", km, 1)
km<- addEdge("H", "G", km, 1)
strongComp(km)
connectedComp(ugraph(km))