Closed kif closed 5 months ago
Hi Jerome, I have been in contact with MAX IV scientist trying to understand this, but I don't quite fully grasp this yet, so I'd like to kindly ask a few questions about it..
From azint
code I saw they apply all the corrections to each individual pixel of the data after polar transformation to radial and azimuthal angle, and then they perform the sparse matrix multiplication using CSR method.
preproc
. Also, correct me if I'm wrong, but if we set split_result
to False, are the corrections done pixel wise? In case I'm right, then is it necessary to apply polarization correction on raw, if we can just NOT split_results
?preproc
done on the original image, or does one have to apply a polar transformation to the raw image before passing it as arg?CSR_integrator
, which does split_result=4
, do we expect a significant difference if we apply polarization correction to raw data instead of having it as part of normalization
? is this difference in intensity, error?
Sorry if any of those sounds silly.. I am just starting to try and understand the algorithm (:
(I hadn't joined the mailing list in November 2023, so I am not fully aware of what was discussed then)Contribution from the MaxIV diffraction & scattering group errorPropAziInt.pdf
This is all done now. See the documentation in https://github.com/silx-kit/pyFAI/tree/main/doc/source/usage/tutorial/Variance/Unweighted.ipynb
For more details, see the discussion with the AzInt team on the pyFAI mailing list.