Exception when viewing ~1D MDHistoWorkspace in Vates Simple GUI

[Janik Zikovsky]

• Make a ~1D line from a 3D MDWS:

  ######################################################################
  #Python Script Generated by GeneratePythonScript Algorithm
  ######################################################################
  LoadEventNexus(Filename=r'/home/8oz/Code/Mantid/Test/AutoTestData/CNCS_7860_event.nxs',OutputWorkspace='cncs_nxs')
  ConvertToDiffractionMDWorkspace(InputWorkspace='cncs_nxs',OutputWorkspace='cncs',LorentzCorrection='1')
  OneStepMDEW(Filename=r'/home/8oz/Code/Mantid/Test/AutoTestData/CNCS_7860_event.nxs',OutputWorkspace='cncs')
  BinMD(InputWorkspace='cncs',AxisAligned='0',BasisVectorX='X,units,0.886648,0.462446,0,1.48174,100',BasisVectorY='Y,units,-0.462446,0.886648,0,2.36821,10',BasisVectorZ='Z,units,-0,-0,1,2.36821,10',Origin='-0.173824,-1.40534,-1.18411',OutputWorkspace='cncs_line2')
  

• Right-click on cncs_line to view in VSG.
• I get a "exception thrown" and Terminate/Continue.

The workspace actually has 3 dimensions, but only one of them is not integrated. IMDWorkspace->getNonIntegratedDimensions().size() might be a better way to judge if it can be plotted.

[Janik Zikovsky]

See also #4671 since it probably would be nice to view the 1D line in 3D space.

[Michael Reuter]

Refs #4670. Using non-integrated dimension check.

Changeset: 46f2f33b12a0d6eab114ae132c3b6867e5e1476c

[Michael Reuter]

To test, don't use the above prescription exactly as above. The resulting workspace does not actually have two of the three dimensions integrated. Use the following:

LoadEventNexus(Filename=r'CNCS_7860_event.nxs',OutputWorkspace='cncs_nxs')
ConvertToDiffractionMDWorkspace(InputWorkspace='cncs_nxs',OutputWorkspace='cncs',LorentzCorrection='1')
BinMD(InputWorkspace='cncs',AxisAligned='0',BasisVectorX='X,units,0.886648,0.462446,0,1.48174,100',BasisVectorY='Y,units,-0.462446,0.886648,0,2.36821,1',BasisVectorZ='Z,units,-0,-0,1,2.36821,1',Origin='-0.173824,-1.40534,-1.18411',OutputWorkspace='cncs_line2')

[Michael Reuter]

Refs #4670. Using non-integrated dimension check.

Changeset: 46f2f33b12a0d6eab114ae132c3b6867e5e1476c

[Owen Arnold]

Works

[Stuart Campbell]

This ticket has been transferred to github issue ​5517