iraf.net

NUMBER:	420
MODULE:	identify
SYSTEM:	V2.10-2.11.1
DATE:	Mon Mar  8 13:27:24 MST 1999
FROM:	valdes

BUG:	If one uses the 'l' key to identify lines from a line list in a
	spectrum that is wavelength calibrated and has physical coordinates
	different from logical coordinates, wrong results or a system error
	(such as a segmentation error) will occur.  This is due to
	conversion of the line list coordinate to a physical pixel
	coordinate and attempting to use this to find a peak in the
	spectrum where the routine expects a logical coordinate.  This
	situation is quite rare and does not occur in normal data
	reductions.

	Logical and physical pixel coordinates become different if a
	section of a spectrum is extracted; such as with IMCOPY or SCOPY.
	The workaround is to reset the physical coordinates to be the same
	as the logical coordinates with the command

	    cl> wcsreset  wcs=physical

STATUS:	Fixed for the next release.