BinMD on MDHistoWorkspace: handle a "modified" MDHistoWS

[Janik Zikovsky]

If someone modifies a MDHistoWS, e.g. wk1 - wk2, and then calls BinMD (e.g. using the LineViewer), only the first workspace will be used!

I'm not sure how to handle the situation. Perhaps simply reject it for now (cut out the link between original and histo, or mark it as "modified")? Other algorithms, e.g. multiply, would modify the data so as to make the result incorrect.

[Janik Zikovsky]

One answer is to tell people to use SliceMD if they'll need to to + or - on their slices. That will work.

Cutting out the link between workspaces would remove the ability to view coordinates in the SliceViewer, so that is not the best solution.

Perhaps I will just add a flag in sample_logs.

[Janik Zikovsky]

Refs #4997: don't allow binning a modified MDHistoWorkspace

If you modify a MDHisto with +, -, * etc. you cannot run BinMD afterwards because it would work quietly but give incorrect results.

Changeset: 9085fb4bc773d3f56422a41d03c37dbcff396040

[Janik Zikovsky]

Note to testers: Call BinMD, then PlusMD, MultiplyMD etc. on the MDHistoWorkspace.

Further calls to binMD e.g. the line plot from the SliceViewer will throw an error.

[Janik Zikovsky]

Refs #4997: don't allow binning a modified MDHistoWorkspace

If you modify a MDHisto with +, -, * etc. you cannot run BinMD afterwards because it would work quietly but give incorrect results.

Changeset: 9085fb4bc773d3f56422a41d03c37dbcff396040

[Michael Reuter]

This works correctly.

[Stuart Campbell]

This ticket has been transferred to github issue ​5843