NXTomo Save Algorithm Improvements

[mantid-builder]

Original Reporter: John Hill

SaveNXTomo Alg:

•Write additional workspace properties into the file.

•Look for and record correct beam intensity information. ('Intensity' log value)

•Look for and record correct rotational information. ('Rotation' log value)

•Look for and record the correct key for an image ('ImageKey' log value)

•Include unit test

LoadFITS Alg:

•Add a parameter to indicate which 'ImageKey' metadata value should be set for a workspace when loaded. This is to differentiate between open/flat field images and sample data images.

Testing:

•Check that LoadFITS alg with AutoTestData/FITS_small_01.fits loads data into a workspace (Set ImageKey property on the load dialogue to 0 or the load will fail)

•Run SaveNXTomo alg on the workspace, and check it saves a file.

•Open it in HDFView and check that entry1/tomo_entry/instrument/detector -> image_key contains a zero value (same as entered when loading the FITS file).

•Check the SaveNXTomoTest test seems sensible and completes in a timely manner.

[mantid-builder]

This issue was originally trac ticket 10374