ppmtomap(1)

NAME

       ppmtomap - extract all colors from a portable pixmap

SYNOPSIS

       ppmtomap [-sort] [-square] [ppmfile]

DESCRIPTION

       Reads  a  portable pixmap as input.  Produces a portable pixmap as out-
       put, representing a color map of the input file. All N different colors
       found  are  put  in an Nx1 portable pixmap.  This color map file can be
       used as a mapfile for ppmquant or ppmtogif.

OPTIONS

       -sort  Produces a portable pixmap with the colors in some sorted order.

       -square
              Produces a (more or less) square output file, instead of putting
              all colors on the top row.

       All flags can be abbreviated to their shortest unique prefix.

WARNING

       If you want to use the output file as a mapfile for ppmtogif, you first
       have  to do a ppmquant 256, since ppmtomap is not limited to 256 colors
       (but to 65536).

SEE ALSO

       ppmtogif(1), ppmquant(1), ppm(5)

AUTHOR

       Marcel Wijkstra (wijkstra@fwi.uva.nl).

       Copyright (C) 1989 by Jef Poskanzer.

                                11 August 1993                     ppmtomap(1)