home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Business Shareware
/
Business Shareware.iso
/
start
/
gfxapps
/
pbmpl91d
/
pbmplus
/
man
/
_ppmquan.man
next >
Wrap
Text File
|
1993-01-08
|
2KB
|
71 lines
ppmquantall(1) Unix Programmer's Manual ppmquantall(1)
NAME
ppmquantall - run ppmquant on a bunch of files all at once, so they share
a common colormap
SYNOPSIS
ppmquantall ncolors ppmfile ...
------- -------
DESCRIPTION
Takes a bunch of portable pixmap as input. Chooses ncolors colors to
-------
best represent all of the images, maps the existing colors to the new
ones, and overwrites the input files 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
ppmquant; this script solves it for multiple pixmaps. All it does is
--------
concatenate them together into one big pixmap, run ppmquant 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 ppmquant's -map option to separately quantize each
--------
pixmap to that set.)
SEE ALSO
ppmquant(1), ppm(5)
BUGS
It's a csh script. Csh scripts are not portable to System V. Scripts in
general are not portable to non-Unix environments.
AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
27 July 1990 1