ppmtomap

 

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 ppmtomap(1)                                           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 output, 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 pre­
        fix.
 
 WARNING
        If you want to use the output file as a mapfile  for  ppm­
        togif, 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)

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