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SCCMAP(1)		    General Commands Manual		     SCCMAP(1)

NAME
       sccmap -	extract	strongly connected components of directed graphs

SYNOPSIS
       sccmap [-dsv] [ -ooutfile ] [ 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  con-
       nected  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  im-
	      portant.

       -S     Just print the resulting graphs. No statistics are printed.

       -ooutput
	      Prints output to the file	output.	If not given, sccmap uses std-
	      out.

       -v     Generate additional statistics. In particular, sccmap prints the
	      number  of nodes,	edges, connected components, and strongly con-
	      nected 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 ig-
       nores 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)

				 21 March 2001			     SCCMAP(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | OPERANDS | DIAGNOSTICS | AUTHORS | SEE ALSO

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