scipp / scipp/ess

More robust grouping by angle

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essspectroscopy
Dominant language
Python
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1
Forks
3
Avg merge
2d 11h
Merged PRs (30d)
17

Description

The BIFROST workflow groups by sample and detector angle a3 and a4. The implementation needs to be extended for:

  • Varying a4.
  • Intermediate angle values that are recorded while the sample or detector moves. Those time regions likely need to be discarded.

The implementation also needs to be benchmarked for long measurements with many log entries for the angles. We may be better off, avoiding sc.lookup in that case and determine bin edges first and then bin by those edges.

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Research direction

Start by locating the BIFROST workflow that groups by sample and detector angles a3 and a4, then inspect how sc.lookup is used. Reproduce grouping with varying a4 and intermediate movement values, and benchmark long measurements with many angle log entries; done means movement regions are discarded and grouping remains correct and performant.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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