iraf.net

NUMBER:	354
MODULE:	scombine
SYSTEM:	V2.10-V2.10.4p2
DATE:	Mon Nov 11 11:39:41 MST 1996
FROM:	valdes

BUG:	The option to use image header keywords for the scale, zero,
	and weight values by specifying the parameter values as
	'!' does not work.  The symptoms are either an error that
	the image header keyword does not exist or all the scale, zero, or
	weight values come out the same.  The workaround is to put the
	values into a file and use the file input option.  For example one
	cannot use 'weight='!wtkeyword' but one can do the following:

	    on> hselect  wtkeyword yes > wts
	    on> scombine  weight='@wts'

	where  are the list of spectra and 'wtkeyword' is the
	keyword in the images to use for the weights.

STATUS:	Fixed for the next release.