iraf.net

NUMBER:	226
MODULE:	artdata.mkobjects
SYSTEM:	V2.9-V2.10.2
DATE:	Fri Sep 17 14:13:24 MST 1993
FROM:	valdes

BUG:	The scales of the 'expdisk' and 'devauc' images are incorrect due
	to an integer truncation error.  The error is such that the actual
	output radius for a given input radius is given by the formulas:

	expdisk:  rout = rin * int(ln(D)/1.6783) / ln(D)/1.6783
	devauc:   rout = rin * int(ln(D)/7.67)**4) / (ln(D)/7.67)**4

	where D is the dynamic range parameter in the ARTDATA package
	parameters, ln() is the natural logarithm, int() is the integer
	truncation function, and ** is the exponentiation operator.
	From this one can, fudge the input radii to give the
	desired output radii, select a dynamic range where the correction
	factor is 1, or account for this as needed when the artificial
	image is analyzed.  The simplest thing is to adjust the dynamic
	range; for example, a dynamic range of 126514 for the 'expdisk'
	model is the closest to the default value of 10000 which will give
	correct output scales.

STATUS:	Fixed in V2.10.3

NUMBER:	265
MODULE:	expanding file templates on Solaris
SYSTEM:	SunOS/IRAF V2.10.2 executing on Solaris
DATE:	Fri Oct 14 13:27:26 MST 1994
FROM:	tody

BUG:    Various users have reported a subtle problem in IRAF which occurs
	when SunOS/IRAF version 2.10.2 is run on a Solaris system in
	compatibility mode.  On occasion IRAF code which reads host
	directories may not 'see' all the files in a directory.  Hence file
	and image templates may not expand correctly, omitting some of the
	files in a directory.

STATUS:	This problem is not present in the native Solaris version of IRAF,
	Solaris/IRAF V2.10.3BETA.  The solution is to update to this version.
	If V2.10.2 must be used, use host system facilities (e.g. ls, provided
	as a foreign task in unix/iraf systems) to expand file templates.