DragonFly On-Line Manual Pages

gcv(1)                       Scotch user's manual                       gcv(1)

NAME
       gcv - graph file converter

SYNOPSIS
       gcv [options] [igfile] [ogfile] [oxfile]

DESCRIPTION
       The gcv program converts Scotch graph files from and to other external
       file formats.

       File igfile is converted into graph file ogfile, with optional geometry
       data being put in geometry file oxfile, if it is available.

       When file names are not specified, data is read from standard input and
       written to standard output. Standard streams can also be explicitly
       represented by a dash '-'.

       When the proper libraries have been included at compile time, gcv can
       directly handle compressed graphs, both as input and output. A stream
       is treated as compressed whenever its name is postfixed with a
       compressed file extension, such as in 'brol.grf.bz2' or '-.gz'. The
       compression formats which can be supported are the bzip2 format
       ('.bz2'), the gzip format ('.gz'), and the lzma format ('.lzma', on
       input only).

OPTIONS
       -h     Display some help.

       -i?ifmt
              Set format of input graph file, which can be:

              b?num  Boeing-Harwell format. This is a matrix format.  Only
                     square matrices are supported. Square matrices with
                     unsymmetric pattern are symmetrized. In case the file
                     contains several matrices, the num parameter allow the
                     user to provide the index of the matrix to convert,
                     starting from 0. When the num parameter is not set, it is
                     assumed to be 0.

              c      Chaco format. This is an adjacency graph format, also
                     used by MeTiS.

              m      Matrix Market format. This is a matrix format describing
                     individual edges. Matrix pattern is symmetrized, such
                     that rectangular matrices are eventually squared.

              s      Scotch graph format. This is an adjacency graph format.

       -o?ofmt
              Set format of output graph file, which can be:

              c      Chaco format.

              m      Matrix Market symmetric pattern format.

              s      Scotch format. This is the default.

       -V     Display program version and copyright.

EXAMPLE
       Convert a Matrix Market graph into a Scotch graph. Matrix Market files
       do not comprise geometry data, so no geometry file is needed on output:

           $ gcv -im brol.mm brol.grf

SEE ALSO
       gbase(1), gtst(1), gmap(1), gord(1), gout(1).

       Scotch user's manual.

AUTHOR
       Francois Pellegrini <francois.pellegrini@labri.fr>

                               February 14, 2011                        gcv(1)