[bug #62597] Arithmetic does not save the result in a file

[Raul Infante-Sainz]

URL:
  <https://savannah.gnu.org/bugs/?62597>

                 Summary: Arithmetic does not save the result in a file
                 Project: GNU Astronomy Utilities
               Submitter: infantesainz
               Submitted: Wed 08 Jun 2022 02:39:04 PM UTC
                Category: Arithmetic
                Severity: 3 - Normal
              Item Group: Output not reasonable
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any


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Follow-up Comments:


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Date: Wed 08 Jun 2022 02:39:04 PM UTC By: Raul Infante-Sainz <infantesainz>
I think this is a bug in 'Arithmetic'. Detected using the 'unique' operator,
but it may happen with other operators also. 

I am trying to obtain the unique value of an image and the result is offered
to the user in a different way depending on the image. Let me explain
different situations.

- 'image.fits' contains 4 pixels, all pixels are different. The result of  


astarithmetic image.fits unique


is 'image_arith.fits', a table containing the unique pixel values. If I use
'--output' to specify an output, it works fine. But there is no way of
obtaining these pixel values on the command line.

- 'image.fits' contains 4 pixels, all pixels are the same value. The result
of


astarithmetic image.fits unique


is the unique pixel value printed on the command line. This is fine. But there
is no way of obtaining the value in an output file. If I use '--output' to
specify an output, it doesn't work.


The desired behaviour should be independent of the output (one single value or
multiple values). I.e.,:
 - Print on the command line by default.
 - Save the output in a file if '--output' is used. 

Sounds reasonable?







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