Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages


home | help
gcv(1)			     Scotch user's manual			gcv(1)

       gcv - graph file	converter

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

       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, dgtst can
       directly	handle compressed graphs, both as input	and output.  A	stream
       is  treated  as	compressed  whenever its name is postfixed with	a com-
       pressed file extension, such as in 'brol.grf.bz2' or '-.gz'.  The  com-
       pression	 formats which can be supported	are the	bzip2 format ('.bz2'),
       the gzip	format ('.gz'),	and the	lzma format ('.lzma', on input only).

       -h     Display some help.

       -iifmt Set format of input graph	file, which can	be:

	      bnum   Boeing-Harwell format. This is  a	matrix	format.	  Only
		     square  matrices  are supported. Square matrices with un-
		     symmetric pattern are symmetrized.	In case	the file  con-
		     tains  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.

       -oofmt 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.

       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.grf

       gtst(1),	gmap(1), gord(1), gout(1).

       Scotch user's manual.

       Francois	Pellegrini <>

				August 03, 2010				gcv(1)


Want to link to this manual page? Use this URL:

home | help