RBGL (version 1.48.1)

floyd.warshall.all.pairs.sp: compute shortest paths for all pairs of nodes

Description

compute shortest paths for all pairs of nodes

Usage

floyd.warshall.all.pairs.sp(g)

Arguments

g

graph object with edge weights given

Value

A matrix of shortest path lengths between all pairs of nodes in the graph.

Details

Compute shortest paths between every pair of vertices for a dense graph. It works on both undirected and directed graph. The result is given as a distance matrix. The matrix is symmetric for an undirected graph, and asymmetric (very likely) for a directed graph. For a sparse graph, the johnson.all.pairs.sp functions should be used instead.

See documentation on these algorithms in Boost Graph Library for more details.

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

johnson.all.pairs.sp

Examples

con <- file(system.file("XML/conn.gxl", package="RBGL"), open="r")
coex <- fromGXL(con)
close(con)
floyd.warshall.all.pairs.sp(coex)