SliceViewer: integrate peaks not displayed if defaults used in IntegratePeaksMD

[Nick Draper]

do this:

1. integrate a peak list with IntegratePeaksMD, but leave the Background inner and outer radius empty
2. Look at it with sliceviewer
3. The peaks are not visible

[Owen Arnold]

Tester: This is how you reproduce the issue.

1) Run the following.

# Basic parameters  for  Triphylite Crystal
#Name of the workspaces to create
ws_name = "TOPAZ_3132" # This file lives in the system test data directory
filename = ws_name +"_event.nxs"
ws = LoadEventNexus(Filename=filename,FilterByTofMin=3000, FilterByTofMax=16000)

# -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
# Part 1. Basic Reduction

# Spherical Absorption and Lorentz Corrections
ws = AnvredCorrection(InputWorkspace=ws, LinearScatteringCoef=0.451, LinearAbsorptionCoef=0.993, Radius=0.14)

# Convert to Q space
LabQ = ConvertToDiffractionMDWorkspace(InputWorkspace=ws, LorentzCorrection='0',
        OutputDimensions='Q (lab frame)', SplitInto=2, SplitThreshold=150)
        
# Find peaks
PeaksLattice = FindPeaksMD(InputWorkspace=LabQ,MaxPeaks=100)

# 3d integration to centroid peaks
PeaksLattice = CentroidPeaksMD(InputWorkspace=LabQ, CoordinatesToUse='Q (lab frame)',
        PeakRadius=0.12, PeaksWorkspace=PeaksLattice)
        
# Find the UB matrix using the peaks and known lattice parameters
FindUBUsingLatticeParameters(PeaksWorkspace=PeaksLattice, a=10.3522, b=6.0768, c=4.7276,
                alpha=90, beta=90, gamma=90, NumInitial=20, Tolerance=0.12)
                
# And index to HKL            
IndexPeaks(PeaksWorkspace=PeaksLattice, Tolerance=0.12)

2) Now run this.

PeaksLattice_Integrated = IntegratePeaksMD(InputWorkspace=LabQ,PeakRadius=0.12,
        BackgroundOuterRadius=0.18,BackgroundInnerRadius=0.15,
        PeaksWorkspace=PeaksLattice)

Plot the peaks in the SliceViewer and you should get spherical peaks. You should be able to switch on/off the background radius.

3) Now run this.

PeaksLattice_Integrated = IntegratePeaksMD(InputWorkspace=LabQ,PeakRadius=0.12,
        PeaksWorkspace=PeaksLattice)

Plot the peaks in the SliceViewer and you get a grey screen!

[Owen Arnold]

refs #6767. Fix and unit test.

Changeset: 1179322a61e784beb5db3e29d57b0826ec74414d

[Owen Arnold]

Tester: Use the python scripts above to test. Rather than giving a grey screen at step 3. You should get a properly rendered spherical peak region. Showing the peak background (using the checkbox) should have no effect.

branch is: bugfix/6767_integrated_peaks

[Owen Arnold]

refs #6767. Fix and unit test.

Changeset: 1179322a61e784beb5db3e29d57b0826ec74414d

[Gesner Passos]

as described, now, no grey screen appears at step 3, but the proper answer.

[Owen Arnold]

refs #6767. Fix and unit test.

Changeset: 1179322a61e784beb5db3e29d57b0826ec74414d

[Owen Arnold]

refs #6767. Fix and unit test.

Changeset: 1179322a61e784beb5db3e29d57b0826ec74414d

[Owen Arnold]

refs #6767. Fix and unit test.

Changeset: 1179322a61e784beb5db3e29d57b0826ec74414d

[Owen Arnold]

refs #6767. Fix and unit test.

Changeset: 1179322a61e784beb5db3e29d57b0826ec74414d

[Owen Arnold]

refs #6767. Fix and unit test.

Changeset: 1179322a61e784beb5db3e29d57b0826ec74414d

[Stuart Campbell]

This ticket has been transferred to github issue ​7613