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- ppmquantall(1) Unix Programmer's Manual ppmquantall(1)
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- NNNAAAMMMEEE
- ppmquantall - run ppmquant on a bunch of files all at once, so they share
- a common colormap
-
- SSSYYYNNNOOOPPPSSSIIISSS
- ppppppmmmqqquuuaaannntttaaallllll _n_c_o_l_o_r_s _p_p_m_f_i_l_e ...
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- DDDEEESSSCCCRRRIIIPPPTTTIIIOOONNN
- Takes a bunch of portable pixmap as input. Chooses _n_c_o_l_o_r_s colors to
- best represent all of the images, maps the existing colors to the new
- ones, and ooovvveeerrrwwwrrriiittteeesss ttthhheee iiinnnpppuuuttt fffiiillleeesss with the new quantized versions.
-
- Verbose explanation: Let's say you've got a dozen pixmaps that you want
- to display on the screen all at the same time. Your screen can only
- display 256 different colors, but the pixmaps have a total of a thousand
- or so different colors. For a single pixmap you solve this problem with
- _p_p_m_q_u_a_n_t; this script solves it for multiple pixmaps. All it does is
- concatenate them together into one big pixmap, run _p_p_m_q_u_a_n_t on that, and
- then split it up into little pixmaps again.
-
- (Note that another way to solve this problem is to pre-select a set of
- colors and then use _p_p_m_q_u_a_n_t's ---mmmaaappp option to separately quantize each
- pixmap to that set.)
-
- SSSEEEEEE AAALLLSSSOOO
- ppmquant(1), ppm(5)
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- BBBUUUGGGSSS
- It's a csh script. Csh scripts are not portable to System V. Scripts in
- general are not portable to non-Unix environments.
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- AAAUUUTTTHHHOOORRR
- Copyright (C) 1991 by Jef Poskanzer.
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- 27 July 1990 1
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