Ximtoppm User Manual(0) Ximtoppm User Manual(0)NAMEximtoppm - convert an Xim file to a PPM image
SYNOPSISximtoppm
[--alphaout={alpha-filename,-}] [ximfile]
DESCRIPTION
This program is part of Netpbm(1)
ximptoppm reads an Xim file as input and produces a PPM image as out‐
put. The Xim toolkit is included in the contrib tree of the X.V11R4
release.
OPTIONS
You can abbreviate any option to its shortest unique prefix.
--alphaout=alpha-filename
ximtoppm creates a PGM file containing the alpha channel values
in the input image. If the input image doesn't contain an alpha
channel, the alpha-filename file contains all zero (transparent)
alpha values. If you don't specify --alphaout, ximtoppm does
not generate an alpha file, and if the input image has an alpha
channel, ximtoppm simply discards it.
If you specify - as the filename, ximtoppm writes the alpha out‐
put to Standard Output and discards the image.
Actually, an Xim image can contain an arbitrary fourth channel
-- it need not be an Alpha channel. ximtoppm extracts any
fourth channel it finds as described above; it doesn't matter if
it is an alpha channel or not.
See pamcomp(1)
for one way to use the alpha output file.
SEE ALSOpamcomp(1) , ppm(1)AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
netpbm documentation April 2, 2000 Ximtoppm User Manual(0)
