SliceViewer - dynamic rebinning with thickness

[Owen Arnold]

For visualisation purposes only! Some of our users are asking that they can give the slice in the slice viewer an effective thickness.

During a run users may start viewing data while the statistics are low in order to determine whether any indication of an expected feature is present.

If the users could provide a thickness for their slice they would sacrifice resolution, but would have the statistics they need to see potential features of interest.

The default should be for it to do what it already does, but if we could somehow expand the slider button itself, we could control the thickness into the screen.

Presumably, under the hood, this could be acheived by modifying the MDImplicitPlane function?

[Janik Zikovsky]

I have ticket #4366 that would cover this issue...

• First you would need to define a volume, of given thickness(es), centered around the current slice.
  • If you have 4 dimensions, you need to specify the Z and Energy thicknesses (for example)

• Next you need to rebin the currently viewed slice in this volume.
  • You can rebin with BinMD to get a regularly gridded workspace.
    • Need to specify how many bins in X/Y...
    • Are the extents equal to the size you are currently viewing?
  • You can re-slice using SliceMD.
    • An advantage is that you might not have to specify the extents/number of bins, since the recursive binning would handle it.

• Once the slice has been calculated, you show that slice workspace in the slice viewer
  • Or perhaps in a separate window?

[Owen Arnold]

I'm not sure that rebinning is actually required. Your slice is intersecting boxes and then projecting those onto the surface in the 2D view. Presumably the slice is set up to have zero width. If the slice had a non-zero width it would intersect more boxes.

[Janik Zikovsky]

The slice is performed by polling the workspace for its signal density at specific points in N-D space, along the specified 2D plane; therefore it has no thickness and only reports the density of the box (in MDEW) or bin (in MDHisto) that contains the point.

You could probe more points above/below the plane and intersect more boxes, and then maybe do the average of the signal you found along that line? However, that would be pretty slow and basically it describes a type of rebinning (in that you need to probe space in 3 or 4 dimensions for each point of the plane)

[Janik Zikovsky]

Refs #4800 laying groundwork for dynamic rebinning

simplifying DimensionSlicewidget a bit

Changeset: c40391907ddbb3647a0ff95c6526b8967896b711

[Janik Zikovsky]

REfs #4800 call BinMD when changing rebinning parameters

Changeset: 6b84eba63b35da82290d6c96b5b4728c62f3f8a1

[Janik Zikovsky]

Refs #4800 overlay 2 workspaces in SliceViewer

Changeset: 910d983eed6c87e061eb6455bdd5782e80a3246d

[Janik Zikovsky]

Refs #4800 GUI to choose rebin mode and refresh it

Changeset: f1b5b72c019f569b5e526347b87b5d23a2a96fe9

[Janik Zikovsky]

Refs #4800 GUI to choose rebin mode and refresh it

Changeset: 7105d4af7991092f0d4848698854eb060fb7b285

[Janik Zikovsky]

Refs #4800 show the overlay ws only when in range

Changeset: 3ee9f20b3a6fc22cbccbf7e74cfe14593e4b843d

[Janik Zikovsky]

Refs #4800 asynchronous call to BinMD

Changeset: 3a256696511a5383f02ebc1a50a322ea54b7c41c

[Janik Zikovsky]

Refs #4800 slight plotting optimization

Changeset: ef0276c603d9a86a1ffc16f80fec9082b21c242d

[Janik Zikovsky]

Refs #4800 show an overlay where the rebinned workspace is

Changeset: 4ebf1bc154ed5e6143c09e0dc9f34f6ae4a36af1

[Janik Zikovsky]

Refs #4800 overlay with no center line but mouse events don't pass

through to the other LineOverlay because they overlap...

Changeset: ab06997318af6f5d9773c6445a251dd1d85b00ae

[Janik Zikovsky]

Refs #4800 LineOverlay and overlay ws mouse events work

Changeset: 70312bd82c418346fa9fb0fa34c0e11f299b364e

[Janik Zikovsky]

Refs #4800 LineOverlay and overlay ws mouse events work

Changeset: dd067850a98c93aac79e11ffdd38cdf5b2ce7776

[Janik Zikovsky]

Refs #4800 hide outline when the rebin is out of range

Changeset: e398ea15233c3dfbb3f7596af7d70a18961bd38d

[Janik Zikovsky]

Refs #4800 use the finest resolution of the 2 workspaces

Changeset: 3eae4bc312989e24a83a49b2915662c90cbd2792

[Janik Zikovsky]

Refs #4800 Lock/Unlock the rebinned workspace in place

So that it can rebin every time you move a slider, or not It might still be nice to rebin when zooming...?

Changeset: 917041b7dfdf42d8afcd967f0a185136745eb69e

[Janik Zikovsky]

Refs #5021 ConvertToMD sped up 109 sec->62 sec

for a large-ish event file, by splitting more frequently. Also refs #4800 parallel binnining in SliceViewer dynamic rebinning

Changeset: 26b89c042537d7e115ed9e9935b18b9658392aae

[Janik Zikovsky]

Refs #4800 documentation images

Changeset: e0a8cafb848b9c9f21395c3407d8756287bf0abf

[Janik Zikovsky]

Refs #4800 documentation images

Changeset: e0a8cafb848b9c9f21395c3407d8756287bf0abf

[Janik Zikovsky]

refs #4800: menu and keyboard shortcut to refresh rebin

Changeset: be0c17d8d231bdddb81cac2bd0dbeb51d9ad4596

[Janik Zikovsky]

refs #4800: menu and keyboard shortcut to refresh rebin

Changeset: be0c17d8d231bdddb81cac2bd0dbeb51d9ad4596

[Andrei Savici]

original title was funnier

[Stuart Campbell]

This ticket has been transferred to github issue ​5647