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Ppmquant User Manual(0)				       Ppmquant	User Manual(0)

NAME
       ppmquant	 - quantize the	colors in a PPM	image down to a	specified num-
       ber

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       ppmquant	is obsolete.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	 -map-
       file  option;  pnmremap is fully	backward compatible with ppmquant with
       the -mapfile option.

       Except with differences suggested by the	 syntax	 synopsis  above,  pp-
       mquant'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 pro-
       gram, 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 dif-
       ficult to fix --	it chose the wrong color set.	Maintaining  two  ver-
       sions of	the same code did not make sense.

SEE ALSO
       pnmquant(1), pnmremap(1), pnmcolormap(1), pamseq(1), ppm(5)

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(0)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHOR | DOCUMENT SOURCE

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