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)