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       ppmquant  is  obsolete.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

netpbm documentation                             22 October 2003                         Ppmquant User Manual(1)