Ticket #4459 (closed: fixed)

Opened 9 years ago

Last modified 5 years ago

SliceViewer: choose different types of normalizations

Reported by: Janik Zikovsky Owned by: Janik Zikovsky
Priority: critical Milestone: Release 2.1
Component: Mantid Keywords:
Cc: alex.buts@…, saviciat@…, ronald.fowler@… Blocked By:
Blocking: Tester: Roman Tolchenov

Description (last modified by Janik Zikovsky) (diff)

Have a menu option to allow the user to change the normalization:

  • Raw signal
  • Signal / volume (default)
  • Signal / number of events (a.k.a # of "pixels" = # of contributing bins from each detector)

This will change the displayed values.

Change History

comment:1 Changed 9 years ago by Janik Zikovsky

  • Description modified (diff)

comment:2 Changed 9 years ago by Alex Buts

I've discussed this issue with Toby and he suggests that proper normalization has to conserve phase space.

Despite the words "Jacobian of the transformation" has been said, IMHO this means dividing each box of MD workspace by volume but in real, not reciprocal space, namely dxdydzdt not dQxdQydQzdE

This seems consistent with dividing by number of "pixels" for histogram (matrix) workspace and provides proper normalization for events

Last edited 9 years ago by Alex Buts (previous) (diff)

comment:3 Changed 9 years ago by Alex Buts

  • Cc saviciat@… added

comment:4 Changed 9 years ago by Alex Buts

  • Cc ronald.fowler@… added

comment:5 Changed 9 years ago by Janik Zikovsky

How do I calculate the real-space volume?

comment:6 Changed 9 years ago by Janik Zikovsky

  • Status changed from new to accepted

comment:7 Changed 9 years ago by Janik Zikovsky

Refs #4459 choose normalization in SliceViewer

Changeset: 8dc49c897f64920cad8ad0871aaa47db5b1da2a2

comment:8 Changed 9 years ago by Janik Zikovsky

Interface for parallel IMDIterators, implemented for MatrixWS

Refs #4782, #4459. Not all builds at this point.

Changeset: 908377a57a604d7e6bcac77f5f0fa15339053d5a

comment:9 Changed 9 years ago by Janik Zikovsky

Refs #4459 fix test build

Changeset: 98d8c2ad86ace39619d2d6f3d3b9602d609334ca

comment:10 Changed 9 years ago by Janik Zikovsky

Refs #4459 fix test build

Changeset: da0f6f650671b5d5023eeb52f5ec99ee3a154dee

comment:11 Changed 9 years ago by Janik Zikovsky

Refs #4459: fix QuadEnBackground test

Changeset: 698ace66a652110f299267dd43a2ef4d92e23767

comment:12 Changed 9 years ago by Janik Zikovsky

Refs #4459 fix MDEvent normalization by # events

Changeset: 2eb8725a9a72db567f1ff3749916748696e5cd10

comment:13 Changed 9 years ago by Janik Zikovsky

  • Status changed from accepted to verify
  • Resolution set to fixed

The support exists in the GUI, however tickets #4733, #4744 must be fixed for the # of events normalization to fully make sense.

comment:14 Changed 8 years ago by Roman Tolchenov

  • Status changed from verify to verifying
  • Tester set to Roman Tolchenov

comment:15 Changed 8 years ago by Roman Tolchenov

  • Status changed from verifying to closed

Confirm that selecting different normalizations in SliceViewer changes the plot

comment:16 Changed 5 years ago by Stuart Campbell

This ticket has been transferred to github issue ​5306

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