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Xpmtoppm User Manual(0) Xpmtoppm User Manual(0)
NAME
xpmtoppm - convert an X11 pixmap to a PPM image
SYNOPSIS
xpmtoppm
[--alphaout={alpha-filename,-}] [-verbose]
[xpmfile]
DESCRIPTION
This program is part of Netpbm(1).
xpbtoppm reads an X11 pixmap (XPM version 1 or 3) as input and produces
a PPM image as output.
OPTIONS
--alphaout=alpha-filename
xpmtoppm creates a PBM file containing the transparency mask for
the image. If the input image doesn't contain transparency in-
formation, the alpha-filename file contains all white (opaque)
transparency values. If you don't specify --alphaout, xpmtoppm
does not generate a transparency file, and if the input image
has transparency information, xpmtoppm simply discards it.
If you specify - as the filename, xpmtoppm writes the transpar-
ency output to Standard Output and discards the image.
See pamcomp(1) for one way to use the transparency output file.
xpmtoppm can't handle a line longer than 8K characters in the
XPM input. If an input line exceeds this limit, xpmtoppm quits
with an error message to that effect. Before Netpbm 10.30 (Oc-
tober 2005), the limit was 2K.
--verbose
xpmtoppm prints information about its processing on Standard Er-
ror.
LIMITATIONS
xpmtoppm recognizes only a limited set of the features of XPM Version
3; i.e. it rejects as invalid many valid XPM images.
The only place a comment block is valid is starting in Column 1 of the
line immediately after "static char ...".
In addition, ppmtoxpm properly recognizes any single-line comment that
begins in Column 1 in the color table part of the file.
There must be for every pixel a default colorname for a color type vis-
ual.
Before Netpbm 10.58 (March 2012), zero bytes per pixel causes the pro-
gram to fail with a message about premature EOF on input.
SEE ALSO
ppmtoxpm(1), pamcomp(1), ppm(5)
AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
Upgraded to work with XPM version 3 by Arnaud Le Hors<lehors@mirsa.in-
ria.fr>, Tue Apr 9 1991.
DOCUMENT SOURCE
This manual page was generated by the Netpbm tool 'makeman' from HTML
source. The master documentation is at
http://netpbm.sourceforge.net/doc/xpmtoppm.html
netpbm documentation 31 December 2011 Xpmtoppm User Manual(0)
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