SANS: Get HAB masking working

[Anders Markvardsen]

Trying to make the isis sans masking clearer. re #5026

Adding more commends in code to make it more clear what goes on in the python masking. As it turns out HAB masking can in fact be applied, but was well hidden and not documented on the wiki

Changeset: c6db43b92f449cf443a28795f13b5df5ab834de4

[Anders Markvardsen]

Small improvement to a python comment. re #5026

Changeset: 0732089eccc196ac8823d2160dbe2b9806e9df8d

[Anders Markvardsen]

Cleanup of spectrum etc isis masking. re #5026

More specifically made wiki and code consistent for masking and adjusted commands according to sans scientists info to:

MASK/CLEARTIME

MASKREAR/FRONT/HAB Hn[>Hm] or MASK Vn[>Vm] - to mask single wires or 'strips' MASKREAR/FRONT/HAB Hn>Hm+Vn>Vm - to mask a rectangular 'box'

MASK Ssp1[>Ssp2]

MASK/TIME t1 t2

MASK/LINE width angle [edit] Qualifiers /CLEAR Clears any detector masks in operation Without any /TIME qualifier only spatial masks are cleared; with a /TIME qualifier only time masks are cleared /TIME [optional] Specifies that the command applies to time masks /LINE Masking arm only has effect for SANS2D /REAR Specifies that the mask applies to the Rear detector (if SANS2D) and the Main detector (if LOQ). This is default if not specified /FRONT Specifies that the mask applies to the Front detector (if SANS2D) and the High-Angle Bank (if LOQ) /HAB This command is equivalent to /FRONT

[edit] Parameters Hm Hn Specify VERTICAL wires (columns) on the detector For SANS2D, 0<H<191; for LOQ 0<H<127 Ssp1 Ssp2 Specifies a specific spectrum numbers; eg, S16641 t1 t2 Neutron times of flight (microseconds) specifying the time region to be masked Vm Vn Specify HORIZONTAL wires (rows) on the detector For SANS2D, 0<V<191; for LOQ 0<V<127

Changeset: 908e21833d26d93d2a2020cf8b8fb3c6fe24163b

[Anders Markvardsen]

fix broken test...... re #5026

Changeset: 76ca2a8bb6ba917acb8f34b46a91297b9edc4025

[Anders Markvardsen]

As it turned out HAB masking in fact did work. Use this ticket to clean up some of the discrepencies between what the wiki http://www.mantidproject.org/SANS_User_File_Commands#MASK say MASK command should do and what the code was doing.

This one is tested in SANSMaskCommandsTest.py - test_single_spectrum

[Stuart Campbell]

This ticket has been transferred to github issue ​5872