[bug #60778] Brightness error not NaN when all STD pixels are blank

[Mohammad Akhlaghi]

URL:
  <https://savannah.gnu.org/bugs/?60778>

                 Summary: Brightness error not NaN when all STD pixels are
blank
                 Project: GNU Astronomy Utilities
            Submitted by: makhlaghi
            Submitted on: Mon 14 Jun 2021 12:37:18 AM BST
                Category: MakeCatalog
                Severity: 3 - Normal
              Item Group: Output not reasonable
                  Status: In Progress
                 Privacy: Public
             Assigned to: makhlaghi
             Open/Closed: Open
         Discussion Lock: Any

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Details:

When the standard deviation image is NaN over the label's pixels, but the
values image is non-NaN, the brightness error column will be zero. 

However, Zero is a meaningful number (for example in a mock image when there
is no error at all). So in the scenario above, the returned value should be
NaN, not zero.

This bug was found by Zahra Sharbaf.




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