Manual: ppmquant

Ppmquant User Manual(1)				   General Commands Manual			     Ppmquant User Manual(1)

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       ppmquant is obsolete.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  compati‐
       ble with ppmquant with the -mapfile option.

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

       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 gener‐
       ate  a  PPM output.  Now, since it is really a PNM program, it processes PBM and PGM inputs as what they are and pro‐
       duces 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)