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|monodif-
       fuse|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 pri-
       maries.  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)