NAME
sccmap - extract strongly connected components of directed graphs
SYNOPSIS
sccmap [-dsv] [ files ]
DESCRIPTION
sccmap decomposes digraphs into strongly connected components and an auxiliary map of the relationship between components. In this map, each component is collapsed into a node. The resulting graphs are printed to standard out. The number of nodes, edges and strongly connected components are printed to standard error. sccmap is a way of partitioning large graphs into more manageable pieces.
OPTIONS
The following options are supported:
-d | Preserve degenerate components of only one node. |
-s | Do not print the resulting graphs. Only the statistics are important. |
-v | Generate additional statistics. In particular, sccmap prints the number of nodes, edges, connected components, and strongly connected components, followed by the fraction of nodes in a non-trivial strongly connected components, the maximum degree of the graph, and fraction of non-tree edges in the graph. |
OPERANDS
The following operand is supported:
files | Names of files containing 1 or more graphs in dot format. If no files operand is specified, the standard input will be used. |
DIAGNOSTICS
sccmap emits a warning if it encounters an undirected graph, and ignores it.
AUTHORS
Stephen C. North <north@research.att.com> Emden R. Gansner <erg@research.att.com>
SEE ALSO
gc(1), dot(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), tred(1), libgraph(3)