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- pnmarith(1) AMIGA (13 January 1991) pnmarith(1)
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- NAME
- pnmarith - perform arithmetic on two portable anymaps
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- SYNOPSIS
- pnmarith -add|-subtract|-multiply pnmfile1 pnmfile2
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- DESCRIPTION
- Reads two portable anymaps as input. Performs the specified
- arithmetic operation, and produces a portable anymap as
- output. The two input anymaps must be the same width and
- height.
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- The arithmetic is performed between corresponding pixels in
- the two anymaps, as if maxval was 1.0, black was 0.0, and a
- linear scale in between. Results that fall outside of
- [0..1) are truncated.
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- All flags can be abbreviated to their shortest unique
- prefix.
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- SEE ALSO
- pbmmask(1), pnmpaste(1), pnminvert(1), pnm(5)
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- AUTHOR
- Copyright (C) 1989, 1991 by Jef Poskanzer.
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- Page 1 (printed 10/19/91)
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