AlignAndFocusPowderFromFiles v1¶

Summary¶

The algorithm used for reduction of powder diffraction data

Properties¶

Description¶

This is a workflow algorithm that wraps AlignAndFocusPowder to perform a double loop over files with chunks, followed by accumulating the results. The additional properties from what is allowed in AlignAndFocusPowder is for how the file is loaded (e.g. MaxChunkSize and FilterBadPulses), an optional Characterizations table, and an optional AbsorptionWorkspace. The AbsorptionWorkspace should be in units of Wavelength for every detector pixel and is divided from the chunk after loaded. For all other information, see AlignAndFocusPowder.

In broad terms, the following pseudo-code describes the general concept of this algorithm:

for filename in filenames:
    cachefile = CreateCacheFilename(filename, ...)
    if cachefile exists:
        wksp_single = LoadNexusProcessed(cachefile)
    else:
        for chunk in DetermineChunking(filename):
            wksp_single_chunk = Load(chunk)
            wksp_single_chunk = AlignAndFocusPowder(wksp_single_chunk, ...)
        # accumulate chunks into wksp_single
        SaveNexusProcess(wksp_single, cachefile)
    # accumulate data from files into OutputWorkspace

Algorithms used by this are:

1. AlignAndFocusPowder v1
2. CompressEvents v1
3. ConvertDiffCal v1
4. ConvertUnits v1
5. CopyLogs v1
6. CopySample v1
7. CreateCacheFilename v1
8. DeleteWorkspace v1
9. DetermineChunking v1
10. Divide v1
11. EditInstrumentGeometry v1
12. FilterBadPulses v1
13. LoadDiffCal v1
14. Load v1
15. LoadIDFFromNexus v1
16. LoadNexusProcessed v1
17. PDDetermineCharacterizations v1
18. Plus v1
19. RebinToWorkspace v1
20. RemoveLogs v1
21. RenameWorkspace v1
22. SaveNexusProcessed v1

Categories: AlgorithmIndex | Diffraction\Reduction

Source¶

Python: AlignAndFocusPowderFromFiles.py