wolffd@0: .TH GC 1 "21 March 2001"
wolffd@0: .SH NAME
wolffd@0: gc \- count graph components
wolffd@0: .SH SYNOPSIS
wolffd@0: .B gc
wolffd@0: [
wolffd@0: .B \-necCaDUrs?
wolffd@0: ]
wolffd@0: [ 
wolffd@0: .I files
wolffd@0: ]
wolffd@0: .SH DESCRIPTION
wolffd@0: .B gc
wolffd@0: is a graph analogue to 
wolffd@0: .B wc 
wolffd@0: in that it prints to standard output 
wolffd@0: the number of nodes, edges, connected components or clusters contained
wolffd@0: in the input files.
wolffd@0: It also prints a total count for
wolffd@0: all graphs if more than one graph is given.
wolffd@0: .SH OPTIONS
wolffd@0: The following options are supported:
wolffd@0: .TP
wolffd@0: .B \-n
wolffd@0: Count nodes.
wolffd@0: .TP
wolffd@0: .B \-e
wolffd@0: Count edges.
wolffd@0: .TP
wolffd@0: .B \-c
wolffd@0: Count connected components.
wolffd@0: .TP
wolffd@0: .B \-C
wolffd@0: Count clusters. By definition, a cluster is a graph or
wolffd@0: subgraph whose name begins with "cluster".
wolffd@0: .TP
wolffd@0: .B \-a
wolffd@0: Count all. Equivalent to
wolffd@0: .B \-encC
wolffd@0: .TP
wolffd@0: .B \-r
wolffd@0: Recursively analyze subgraphs.
wolffd@0: .TP
wolffd@0: .B \-s
wolffd@0: Print no output. Only exit value is important.
wolffd@0: .TP
wolffd@0: .B \-D
wolffd@0: Only analyze directed graphs.
wolffd@0: .TP
wolffd@0: .B \-U
wolffd@0: Only analyze undirected graphs.
wolffd@0: .TP
wolffd@0: .B \-?
wolffd@0: Print usage information.
wolffd@0: .LP
wolffd@0: By default, 
wolffd@0: .I gc
wolffd@0: returns the number of nodes and edges.
wolffd@0: .SH OPERANDS
wolffd@0: The following operand is supported:
wolffd@0: .TP 8
wolffd@0: .I files
wolffd@0: Names of files containing 1 or more graphs in dot format.
wolffd@0: If no
wolffd@0: .I files
wolffd@0: operand is specified,
wolffd@0: the standard input will be used.
wolffd@0: .SH "EXIT STATUS"
wolffd@0: The following exit values are returned:
wolffd@0: .TP 4
wolffd@0: .B 0
wolffd@0: Successful completion.
wolffd@0: .TP
wolffd@0: .B 1
wolffd@0: The
wolffd@0: .B \-U
wolffd@0: or
wolffd@0: .B \-E
wolffd@0: option was used, and a graph of the wrong type was encountered.
wolffd@0: .SH AUTHOR
wolffd@0: Emden R. Gansner <erg@research.att.com>
wolffd@0: .SH "SEE ALSO"
wolffd@0: wc(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), sccmap(1), tred(1), libgraph(3)