SANS: Update Qxy to use the same underlying equations that Q1D uses

[Steve Williams]

Currently Qxy() uses the old method of calculating I(Q) documented at the bottom of the Q1D page under versio 1. Update it to use the new formula documented on the Q1d wiki.

[Mathieu Doucet]

Note that ORNL uses the current version of Qxy, so please make sure to keep the current version.

[Anders Markvardsen]

In [14444]:

Some updates to doc for Q1D2. re #3451

[Russell Taylor]

In [14447]:

Fix build. Method definition removed by mistake? Re #3451.

[Nick Draper]

Bulk move of tickets to iteration 31 at the iteration 30 code freeze

[Anders Markvardsen]

In [15003]:

Some initial steps towards allowing Qxy to include the same corrections as Q1D2. re #3451

[Anders Markvardsen]

In [15023]:

Move more common code for sans Q1D and Qxy reduction into Qhelper.
Code for Qxy optional arguments added:

1) individual pixel corrections
2) individual bin (wavelength dep) correction
3) radius and wavelength cut

re #3451

[Anders Markvardsen]

In [15040]:

Fix

re #3451

[Anders Markvardsen]

In [15042]:

Make new Qxy active in python.....

re #3451

[Anders Markvardsen]

In [15052]:

Updated ISIS sans 2D systemtests to reflect changes to Qxy.

re #3451

[Anders Markvardsen]

Wiki updated http://www.mantidproject.org/Qxy

[Martyn Gigg]

In [15122]:

Minor increase in tolerance for error values that differ on platforms. Refs #3451

[Martyn Gigg]

In [15125]:

Minor fix to Qxy to avoid an index out-of-bounds error from a loop that counts backward. (Might fix the tests on Linux?) Refs #3451

[Martyn Gigg]

In [15133]:

Refs #3451

[Karl Palmen]

Unit tests exist for Q1D2, Q1D and Qxy and are passed (on Jenkins). I see that Q1D and Qxy use the same formula as show in the wiki as described although by different code.

[Stuart Campbell]

This ticket has been transferred to github issue ​4298