iraf.net

NUMBER:	463
MODULE:	splot
SYSTEM:	V2.11-V2.11.3a
DATE:	Tue Feb 15 15:59:39 MST 2000
FROM:	valdes

BUG:	The 'h' key method for measuring equivalent widths will produce
	an arithmetic exception (such as divide by zero) when the pixel
	coordinate becomes large (say > 4000).  The exact error and limit
	value depends on the host system.  The workaround is to extract the
	desired piece of the spectrum into a shorter piece.  If you know
	the pixel coordinates you could use IMCOPY with an image section.
	If you know the wavelength region then use SCOPY.

	    on> imcopy longspec[5210:5310] temp
		or
	    on> scopy longspec temp w1=6140 w2=6143 rebin-

	    on> splot temp
	    

	Alternatively one can use one of the other methods for measuring
	equivalent widths such as 'e', 'k', or 'd'.

STATUS:	The algorithm is revised in the next release.

NUMBER:	531
MODULE:	mkheader
SYSTEM:	-V2.12.1
DATE:	Mon Nov 10 15:57:28 MST 2003
FROM:	valdes

BUG:	The error

	     Old format = '%s%*t<>
')
	     ERROR: No write permission on file (String_File)

	occurs when the number of keywords being added exceeds the internal
	limits of the header.  The workaround is to ignore this error,
	clean up any problems in the last keyword added, and add more
	headers in additional steps.

STATUS:	The unclear error has been replaced by the warning 'Possibly failed
	to add all keywords'.  This change was added for V2.12.2.