[bug #63171] Strange patterns on warped images

[Pedram Ashofteh Ardakani]

Follow-up Comment #7, bug #63171 (project gnuastro):

Nice catch! First I tried --edgesampling but then I thought of smaller CDELT
as well.

I just updated task#16272 and gave the developing branch [1]. But the output
looks just like what Mohammad shows in comment#3! See files 'img.jpg' and
'img_pixelareaonwcs.jpg'.

[1] https://codeberg.org/pedramardakani/gnuastro/src/branch/pixelonarea

This debugging image is added as the last HDU if you give the
'--pixelareaonwcs' option to Warp. It is implemented in Library level.

(By the way, how do you guys know what is the image id so you can show them in
your posts? 🤔)

(file #53827, file #53828)

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Additional Item Attachment:

File name: img.jpg                        Size:86 KB
    <https://file.savannah.gnu.org/file/img.jpg?file_id=53827>

File name: img_pixelareaonwcs.jpg         Size:27 KB
    <https://file.savannah.gnu.org/file/img_pixelareaonwcs.jpg?file_id=53828>



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