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PNMARITH.MAN
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1991-08-11
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pnmarith(1) Unix Programmer's Manual pnmarith(1)
NNNAAAMMMEEE
pnmarith - perform arithmetic on two portable anymaps
SSSYYYNNNOOOPPPSSSIIISSS
pppnnnmmmaaarrriiittthhh ---aaadddddd|-sssuuubbbtttrrraaacccttt|-mmmuuullltttiiippplllyyy _p_n_m_f_i_l_e_1 _p_n_m_f_i_l_e_2
DDDEEESSSCCCRRRIIIPPPTTTIIIOOONNN
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.
The arithmetic is performed between corresponding pixels in the two
anymaps, with maxval as 1.0, black as 0.0, and a linear scale in between.
Results that fall outside of [0..1) are truncated.
All flags can be abbreviated to their shortest unique prefix.
SSSEEEEEE AAALLLSSSOOO
pbmmask(1), pbmpaste(1), pnminvert(1), pnm(5)
AAAUUUTTTHHHOOORRR
Copyright (C) 1989, 1991 by Jef Poskanzer.
13 January 1991 1