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ppmtopj(1)


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 2.

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.

                             13 July 1991                       ppmtopj(1)



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