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SCCMAP
Section: User Commands (1)
Updated: 21 March 2001
Index
Return to Main Contents
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)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- OPERANDS
-
- DIAGNOSTICS
-
- AUTHORS
-
- SEE ALSO
-
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