Xpmtoppm User Manual(0) Xpmtoppm User Manual(0)NAMExpmtoppm - convert an X11 pixmap to a PPM image
SYNOPSISxpmtoppm
[--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
information, the alpha-filename file contains all white (opaque)
alpha values. If you don't specify --alphaout, xpmtoppm does
not generate an alpha file, and if the input image has trans‐
parency information, xpmtoppm simply discards it.
If you specify - as the filename, xpmtoppm writes the alpha out‐
put to Standard Output and discards the image.
See pamcomp(1)
for one way to use the alpha 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
(October 2005), the limit was 2K.
--verbose
xpmtoppm prints information about its processing on Standard
Error.
LIMITATIONSxpmtoppm 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 ALSOppmtoxpm(1) , pamcomp(1) , ppm(1)AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
Upgraded to work with XPM version 3 by Arnaud Le
Hors<lehors@mirsa.inria.fr>, Tue Apr 9 1991.
netpbm documentation 31 December 2011 Xpmtoppm User Manual(0)
