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gc(1)


NAME

   gc - count graph components

SYNOPSIS

   gc [ -necCaDUrsv?  ] [ files ]

DESCRIPTION

   gc  is  a graph analogue to wc in that it prints to standard output the
   number of nodes, edges, connected components or clusters  contained  in
   the  input  files.  It also prints a total count for all graphs if more
   than one graph is given.

OPTIONS

   The following options are supported:

   -n     Count nodes.

   -e     Count edges.

   -c     Count connected components.

   -C     Count clusters. By definition, a cluster is a graph or  subgraph
          whose name begins with "cluster".

   -a     Count all. Equivalent to -encC

   -r     Recursively analyze subgraphs.

   -s     Print no output. Only exit value is important.

   -D     Only analyze directed graphs.

   -U     Only analyze undirected graphs.

   -v     Verbose output.

   -?     Print usage information.

   By default, gc returns the number of nodes and edges.

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.

EXIT STATUS

   The following exit values are returned:

   0   Successful completion.

   1   The -U or -E option was used, and a graph of  the  wrong  type  was
       encountered.

AUTHOR

   Emden R. Gansner <erg@research.att.com>

SEE ALSO

   wc(1),  acyclic(1), gvpr(1), gvcolor(1), ccomps(1), sccmap(1), tred(1),
   libgraph(3)

                             21 March 2001                           GC(1)



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