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TRED(1) General Commands Manual TRED(1) NAME tred - transitive reduction filter for directed graphs SYNOPSIS tred [ -ovr? ] [ files ] DESCRIPTION tred computes the transitive reduction of directed graphs, and prints the resulting graphs to a file or standard output. This removes edges implied by transitivity. Nodes and subgraphs are not otherwise af- fected. The ``meaning'' and validity of the reduced graphs is applica- tion dependent. tred is particularly useful as a preprocessor to dot to reduce clutter in dense layouts. Undirected graphs are silently ignored. OPTIONS The following options are supported: -o FILE Redirect output to the given file. By default, output goes to stdout. -v Verbose output to stderr. -r Print information of removed edges to stderr. -? Print usage information. 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. BUGS Using bitmaps internally would substantially decrease running time. DIAGNOSTICS If a graph has cycles, its transitive reduction is not uniquely de- fined. In this case tred emits a warning. 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), sccmap(1), libgraph(3) 21 March 2001 TRED(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | OPERANDS | BUGS | DIAGNOSTICS | AUTHORS | SEE ALSO
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