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DM-33966: Create a fractional residual action for PSF size residuals #640

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merged 2 commits into from Mar 10, 2022

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arunkannawadi
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Comment on lines +136 to +139
FractionalResidualColumns = makeColumnExpressionAction("FractionalResidualColumns", "(colA-colB)/colB",
exprDefaults={"colA": SingleColumnAction,
"colB": SingleColumnAction},
docstring=_docs)
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Ah, I guess this is why you only need to specify ixx and iyy in the pipeline yaml, and not ixy. I don't know if that is the correct thing to do scientifically, but at least I understand why it doesn't crash now! :)

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No, this is not why not specifying ixy didn't crash the pipeline (too many negatives!). The real reason was this.

@arunkannawadi arunkannawadi merged commit ff32997 into main Mar 10, 2022
@arunkannawadi arunkannawadi deleted the tickets/DM-33966 branch March 10, 2022 18:47
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2 participants