resample uses datamodel for temporary storage of iscale

[stscijgbot-jp]

Issue JP-3713 was created on JIRA by Brett Graham:

resample during many_to_one uses the datamodel as temporary storage for iscale:

jwst/jwst/resample/resample.py

Line 367 in 8efc26f

img.meta.iscale = iscale

that is later used during variance array resampling:

jwst/jwst/resample/resample.py

Line 551 in 8efc26f

iscale = input_model.meta.iscale

and then removed from the model:

jwst/jwst/resample/resample.py

Line 414 in 8efc26f

del img.meta.iscale

 

This forces resample to write out a temporary file for the model between science and variance array resampling. This could likely be avoided perhaps as part of a larger refactoring of resample to combine variance and science array resampling.

[stscijgbot-jp]

Comment by Melanie Clarke on JIRA:

Fixed by #8866