PPMTOPJ

NAME

      ppmtopj - convert a portable pixmap to an HP PaintJet file

SYNOPSIS

      ppmtopj [-gamma val] [-xpos val] [-ypos val] [-back dark|lite] [-rle]
      [-center] [-render
      none|snap|bw|dither|diffuse|monodither|monodiffuse|clusterdither|monoclusterdither]
      [ppmfile]

DESCRIPTION

      Reads a portable pixmap as input and converts it into a format
      suitable to be printed by an HP PaintJet printer.
      For best results, the input file should be in 8-color RGB form; i.e.
      it should have only the 8 binary combinations of full-on and full-off
      primaries.  You could get this by sending the input file through
      ppmquant -map with a map file such as:
          P3
          8 1
          255
          0 0 0      255 0 0    0 255 0    0 0 255
          255 255 0  255 0 255  0 255 255  255 255 255
      Or else you could use use ppmdither -red 2 -green 2 -blue

OPTIONS

      -rle          Run length encode the image.  (This can result in larger
                    images)
      -back         Enhance the foreground by indicating if the background
                    is light or dark compated to the foreground.
      -render alg   Use an internal rendering algorithm (default dither).
      -gamma int    Gamma correct the image using the integet parameter as a
                    gamma (default 0).
      -center       Center the image to an 8.5 by 11 page
      -xpos pos     Move by pos pixels in the x direction.
      -ypos pos     Move by pos pixels in the y direction.

REFERENCES

      HP PaintJet XL Color Graphics Printer User's Guide

SEE ALSO

      pnmdepth(1), ppmquant(1), ppmdither(1), ppm(5)

BUGS

      Most of the options have not been tested because of the price of the
      paper.

AUTHOR

      Copyright (C) 1991 by Christos Zoulas.