ThresholdMD

[Owen Arnold]

Jon Taylor requested that this would be a useful tool as part of an imaging toolset after looking at #7252.

• Have options for Less than and Greater than.
• Have an input value to use as the threshold
• Have an optional value to set the signal to, should the condition be met
• Output a new MDHistoWorkspace

[Owen Arnold]

refs #7264. Alg and test template.

Changeset: 643e2d9326cb4ef8f31b1fb2d3aad06819b149de

[Owen Arnold]

refs #7264. Parallel ex and report.

Changeset: e2a175f238d162313565a6495383e17486c171e8

[Owen Arnold]

refs #7264. Implement thresholding on image.

Changeset: 80f2a10501ce9c4f0210e1948d50e2a970ac89ac

[Owen Arnold]

Tester:

Look at the following and run it. You should be able to satisfy yourself from the slice images and the algorithm inputs that the algorithm is thresholding this schenario correctly.

CreateMDHistoWorkspace(SignalInput='1,2,3,4,5,6,7,8,9',ErrorInput='1,1,1,1,1,1,1,1,1',Dimensionality='2',Extents='-1,1,-1,1',NumberOfBins='3,3',Names='A,B',Units='U,T',OutputWorkspace='demo')
plotSlice('demo')
ThresholdMD(InputWorkspace='demo',Condition='Greater Than',CurrentValue='1',OverwriteWithZero='0',OutputWorkspace='threshold')
plotSlice('threshold')

Now use this script as a template to perform further testing, and include what additional execution paths you tested in the closing comments (should the ticket pass).

[Nick Draper]

Passed testing ticket #7282 raised

[Stuart Campbell]

This ticket has been transferred to github issue ​8110