ppmtopj(1)                                             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|clus-
       terdither|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                         1