iraf.net

Using "NOAO/IRAF PC-IRAF Revision 2.16 EXPORT Thu May 24 15:41:17 MST 2012" (according to the login banner), hedit does not consistently separate fields where there are commas in the 'fields' parameter. Here is an example. The file test_prism.fits is just an arbitrary FITS file.

ecl\$this->_split2($m[0]) hedit test_prism.fits[0] abc,def,ghi junk add+
add test_prism.fits[0],abc,def,ghi = junk
test_prism.fits[0] updated

ecl\$this->_split2($m[0]) catfits test_prism.fits[0] long+

*** File: test_prism.fits
SIMPLE = T / Fits standard
...
PEDIGREE= 'inflight'
ABC,DEF,= 'junk '

ecl\$this->_split2($m[0]) lpar hedit
images = "test_prism.fits[0]" images to be edited
fields = "abc,def,ghi" fields to be edited
value = "junk" value expression
(add = no) add rather than edit fields
(addonly = no) add only if field does not exist
(delete = no) delete rather than edit fields
(verify = no) verify each edit operation
(show = yes) print record of each edit operation
(update = yes) enable updating of the image header
(mode = "ql")

Phil

See the help page description of the 'add' parameter, which says in part:



Multi-value 'fields' apply only when editing/deleting parameters.

Thanks, Mike. Sorry, I had just forgotten about the difference when add=yes.

We encountered this because a cl script called hedit without specifying all the parameters, in particular add and addonly were omitted. The call to hedit did not update the keywords as intended because the user had add=yes in his uparm copy of the hedit par file. The user has been notified, and I'll fix our cl script.

Phil