MERGECHAN(1) 1 (Nov 8, 1987) MERGECHAN(1)
NAME
mergechan - merge channels from several RLE files into a
single output stream
SYNOPSIS
mergechan [ -a ] [ -o outfile ] infiles ...
DESCRIPTION
Mergechan takes input from several RLE files and combines
them into a single output stream. Each channel in the
output stream comes from the respective filename specified
on the input (i.e., channel zero is taken from the first
file, channel one from the next, etc). The same file can be
specified more than once. If the -a flag is given, the
channels are numbered from -1 (the alpha channel) instead of
zero. All of the input channels must have exactly the same
dimensions (use crop(1) to adjust files to fit each other).
Mergechan is typically used to introduce an alpha mask from
another source into an image, or combine color channels
digitized independently.
If -o is specified, the output will be written to outfile.
SEE ALSO
crop(1), rleswap(1), urt(1), RLE(5).
AUTHOR
John W. Peterson, University of Utah.
BUGS
Mergechan is totally ignorant of the color maps of the input
files.
The restriction that all input files must be the same size
could probably be removed.
Page 1 (printed 12/1/98)
