leonarski_f and Claude Opus 5 1a0774eed0
Azimuthal integration: clear sum2 along with sum and count ...
Clear() reallocated sum and count but left sum2 as the constructor had
sized it. Every caller reuses one profile across the images of a dataset
(rugnux keeps one per worker, the viewer one per view), so the squares
kept accumulating while the means restarted at zero: the per-image
standard deviation written to /entry/azint and shown in the plots was
meaningless from the second image on, and grew without bound over a run.
The size mismatch was the sharper edge. Clearing to a mapping with a
different bin count left sum2 shorter than sum, and GetStd() and
operator+= then read past its end - reachable in the viewer by opening a
dataset with a wider q range than the one before it.
Both are covered by tests: the same frame twice with a Clear() in
between has to give the same standard deviation, and a profile cleared
to a wider mapping has to report the right value in a bin that only the
wider mapping has.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com >
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leonarski_fandClaude Opus 5
1a0774eed0