pnmdepth(1)             UNIX System V(12 January 1991)              pnmdepth(1)


NAME
      pnmdepth - change the maxval in a portable anymap

SYNOPSIS
      pnmdepth newmaxval [pnmfile]

DESCRIPTION
      Reads a portable anymap as input.  Scales all the pixel values, and
      writes out the image with the new maxval.  Scaling the colors down to a
      smaller maxval will result in some loss of information.

      Be careful of off-by-one errors when choosing the new maxval.  For
      instance, if you want the color values to be five bits wide, use a maxval
      of 31, not 32.

SEE ALSO
      pnm(5), ppmquant(1), ppmdither(1)

AUTHOR
      Copyright (C) 1989, 1991 by Jef Poskanzer.


































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