MD plotting issue

[Owen Arnold]

Reported by Jon Taylor via Mantid Help. Generating a LinePlot and converting it to a MatrixWorkspace via ConvertMDHistoWorkspaceToMatrixWorkspace is producing the wrong form of plot.

The two plots generated with the following script should be identical.

LoadMD(Filename='/Users/spu92482/Documents/mantid/systemtests/Data/SEQ_MDEW.nxs', OutputWorkspace='orig')
BinMD(InputWorkspace='orig', AxisAligned='0', BasisVector0='X,units,0,-0,0.84049,0.541827', BasisVector1='Y,units,0,-0,-0.541827,0.84049', BasisVector2='2,units,1,-0,-0,0', BasisVector3='3,units,0,1,-0,0', Translation='0,-0.25,-0.897805,17.1698', OutputExtents='0,0.261172,-0.1,0.1,-0.1,0.1,-0.1,0.1', OutputBins='100,1,1,1', OutputWorkspace='orig_line')
converted = ConvertMDHistoToMatrixWorkspace('orig_line')
plotSpectrum(converted, 0)
plotMD('orig_line')

[Owen Arnold]

refs #10820. Fix with unit tests in place

Still need to check axis labelling.

Changeset: 3572e2cfbdf3df1d85712a4243f9ffac9271e667

[Owen Arnold]

refs #10820. Axis labelling introduced and tested.

I've put in a switch to recover the original behaviour.

Changeset: f20ff02377bdc513528468dfbf5dad0021444da2

[Owen Arnold]

This is being verified as ​pull request #112.

[Owen Arnold]

Please don't merge this into master yet.

[Owen Arnold]

refs #10820. Fix unitialized warning

Changeset: 8e04a8acb8114ca4844e5813b0939de3c708267b

[Owen Arnold]

test this please

[Owen Arnold]

test this please

[Owen Arnold]

refs #10820. Use original dim name

The problem at the moment is that if you execute plotMD, and what should be the equivalent (ConvertToMatrixWorkspace followed by plotSpectrum), the x-axis labels are different. plotMD takes the input from the original workspace, which is better, where as the latter approach is providing arbitrary labels. If the transform to the original is possible, and the original workspace has been provided, then that is where the dimension information is now taken from. Unit tests adapted to show this.

Changeset: 00c5508fe5fbc1c15c8bda038e381c5458df7a0a

[Owen Arnold]

test this please

[Owen Arnold]

This has been fixed now. The determination of the x-axis to use when creating MatrixWorkspaces uses the same logic as is used in plotMD.

The original issue highlighted by the script has been fixed now.

[Roman Tolchenov]

Merge pull request #112 from mantidproject/bugfix/10820_fix_convert

Bugfix/10820 fix convert

Full changeset: ​52ef927f1099336979e0ab05a0d6c3e68d9f1383

[Stuart Campbell]

This ticket has been transferred to github issue ​11662