[task #15690] WCS distortion conversion only in the headers

[Mohammad Akhlaghi]

URL:
  <https://savannah.gnu.org/task/?15690>

                 Summary: WCS distortion conversion only in the headers
                 Project: GNU Astronomy Utilities
            Submitted by: makhlaghi
            Submitted on: Sat 13 Jun 2020 06:54:51 AM BST
         Should Start On: Sat 13 Jun 2020 12:00:00 AM BST
   Should be Finished on: Sat 13 Jun 2020 12:00:00 AM BST
                Category: Fits
                Priority: 5 - Normal
              Item Group: Enhancement
                  Status: None
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                  Effort: 0.00

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Details:

With Commit 7da840d48a
<http://git.savannah.gnu.org/cgit/gnuastro.git/commit/?id=7da840d48a1364a339ec48a06d9b6fb2ca5be9ad>,
the Fits program can do conversions between various distortions (currently
only TPV <--> SIP). However, it will also read the full input dataset, and
write it into the output also. 

This job is basically only a key-word related job, and shouldn't involve data.
We should find a better way to avoid having to (possibly) use a lot of RAM and
slow-down the program by reading-writing the data array.




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