Linux Commands Examples

A great documentation place for Linux commands


convert a portable pixmap to an HP PaintJet file

see also : pnmdepth - ppmquant - ppmdither


ppmtopj [-gamma val] [-xpos val] [-ypos val] [-back dark|lite] [-rle] [-center] [-render none|snap|bw|dither|diffuse|monodither|monodiffuse|clusterdither|monoclusterdither] [ppmfile]

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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:
8 1
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.



Run length encode the image. (This can result in larger images)


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 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.


HP PaintJet XL Color Graphics Printer User’s Guide


Most of the options have not been tested because of the price of the paper.

see also

pnmdepth , ppmquant , ppmdither , ppm


Copyright (C) 1991 by Christos Zoulas.

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