ppmquant

   Updated: 22 October 2003
   Table Of Contents

NAME

   ppmquant - quantize the colors in a PPM image down to a speci-
fied number

SYNOPSIS

   ppmquant [-floyd|-fs] ncolors [ppmfile]
   ppmquant [-floyd|-fs] [-nofloyd|-nofs] -mapfile mapfile  [ppm-
file]

   All	options	 can be abbreviated to their shortest unique pre-
fix. You may use
   two hyphens instead of one to designate an option. You may use
either white
   space or equals signs between an option name and its value.

DESCRIPTION

   This program is part of Netpbm.

   ppmquant  is	 obsolete.  All it does now is invoke pnmquant or
pnmremap. You
   should use one of those programs in any new program, or if you
are modifying
   an  old program, and your program does not have to work with a
version of
   Netpbm  before  9.21	 (January  2001).  ppmquant  exists  only
for name
   compatibility.

   pnmquant  is	 fully	backward compatible with ppmquant without
the -mapfile
   option;  pnmremap  is fully backward compatible with	 ppmquant
with the
   -mapfile option.

   Except  with	 differences  suggested	 by  the  syntax synopsis
above, ppmquant's
   function is the same as pnmquant and pnmremap.

   Before Netpbm 10.19 (November 2003), ppmquant was a completely
separate
   program  from  pnmquant, and was a bona fide PPM program. That
means if you
   gave it a PGM or PBM image as input, it would process it as if
it were PPM
   and	 generate   a  PPM  output. Now, since it is really a PNM
program, it
   processes PBM and PGM inputs as what they are and produces the
same kind of
   output.

   Note:  The reason ppmquant was changed in Netpbm 10.19 is that
for some time
   before that, ppmquant had a serious bug that would  have  been
difficult to
   fix	-- it chose the wrong color set. Maintaining two versions
of the same
   code did not make sense.

SEE ALSO

   pnmquant, pnmremap, pnmcolormap, pamseq, ppm

AUTHOR

   Copyright (C) 1989, 1991 by Jef Poskanzer.
     _________________________________________________________________



Table Of Contents

     * NAME
     * SYNOPSIS
     * DESCRIPTION
     * REFERENCES
     * SEE ALSO
     * AUTHOR

UNIX/Linux commands referenced on this page:

1. pnmquant
2. pnmremap
3. as
4. make
5. pnmcolormap
6. pamseq