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@s-goldman s-goldman commented Aug 21, 2025

Resolves HLA-1537

Closes #2051

This PR removes the rounding for IDSCALE, which is the pixel scale of the IDCTAB (distortion correction). It seems that rounding this value to three digits may have a small impact on accuracy during the astrodrizzle step. The original contribution of the code did not have any additional context for rounding the value (#1005).

Checklist for maintainers

  • added entry in CHANGELOG.rst within the relevant release section
  • updated or added relevant tests
  • updated relevant documentation
  • added relevant label(s)

Regression tests passing: Link

@s-goldman s-goldman marked this pull request as ready for review August 25, 2025 17:30
@s-goldman s-goldman requested review from mdlpstsci and a team as code owners August 25, 2025 17:30
@s-goldman s-goldman requested review from mcara and nden August 28, 2025 17:14
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nden commented Sep 12, 2025

This change, I believe, will have an effect only on SVM and MVM generation. Are there any SVM or MVM tests in the regular regression test run, linked above?

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This change, I believe, will have an effect only on SVM and MVM generation. Are there any SVM or MVM tests in the regular regression test run, linked above?

There are no MVM tests, but the regression test linked in the initial comment of this PR include SVM tests:

Regression tests passing: Link

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Drizzlepac/HAP: IDCSCALE in runastrodrizzle should not be an integer
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