NAME

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

SYNOPSIS

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

       All options can be abbreviated to their shortest unique prefix.  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(1).

       ppmquant is obsolete.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(1), pnmremap(1), pnmcolormap(1), pamseq(1), ppm(1)

AUTHOR

       Copyright (C) 1989, 1991 by Jef Poskanzer.

DOCUMENT SOURCE

       This  manual page was generated by the Netpbm tool 'makeman' from HTML source.  The master
       documentation is at

              http://netpbm.sourceforge.net/doc/ppmquant.html