ppmtopj Man page

ppmtopj General Commands Manual 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|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, ppmquant, ppmdither, 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

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