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Dear IRAF Helper,If I run the following little script on image `test.fits' to change its
current value of VOBS to "9999.": # do_hedit_test.cl
hedit test.fits VOBS "9999." verify+by typing `cl < do_hedit_test.cl', the following line appears in my IRAF
window:
test,VOBS (4841. -> 9999.): update test ? (yes): cl>BUT the value of `VOBS' does NOT change to "9999."; it remains at "4841."If, however, I simply lift the `hedit test.fits ...' line out of the
script and enter it into my IRAF window, then all works fine (the `update'
and `verify' parameters are both set to `yes' in my parameter set for
`hedit', I get asked a question twice, and VOBS does change to "9999.").Why is this, and how can I properly execute a `hedit' command from within
a simple script?Will be most grateful for any pointers you may give me.Cheers,
Francois

Hi Francois,
A CL redirection like yours redirects all input, including the
response to the parameter prompt triggered by the 'verify' param. What's
happening is that the parameter prompt is seeing the EOF of the script and
so not updating the value since the verify returns a false value. To fix
this you can disable the 'verify' param, or else make this a procedure
script and execute it as a task.
Hope this helps, let us know if you still have questions.Cheers,
Mike Fitzpatrick