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ppmtopj - convert a portable pixmap to an HP PaintJet file |
ppmtopj [-gamma val] [-xpos val] [-ypos val] [-back dark|lite] [-rle] [-center] [-render none|snap|bw|dither|diffuse|monodither|monodiffuse|clusterdither|monoclusterdither] [ppmfile] |
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. |
-rle |
Run length encode the image. (This can result in larger images) |
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-back |
Enhance the foreground by indicating if the background is light or dark compated to the foreground. |
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-render alg |
Use an internal rendering algorithm (default dither). |
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-gamma int |
Gamma correct the image using the integet parameter as a gamma (default 0). |
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-center |
Center the image to an 8.5 by 11 page |
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-xpos pos |
Move by pos pixels in the x direction. |
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-ypos pos |
Move by pos pixels in the y direction. |
HP PaintJet XL Color Graphics Printer User’s Guide |
pnmdepth(1), ppmquant(1), ppmdither(1), ppm(5) |
Most of the options have not been tested because of the price of the paper. |
Copyright (C) 1991 by Christos Zoulas. |