Euphonic: Powders

[rebeccafair]

Easy and efficient simulation of powders in Euphonic in addition to single crystals is important for many users. Required tasks:

• [x] https://github.com/pace-neutrons/Pace-Project-Plan/issues/187

Priorities from above discussion:

• [ ] https://github.com/pace-neutrons/Pace-Project-Plan/issues/195
• [ ] https://github.com/pace-neutrons/Euphonic/issues/214

We may get powder averaging for free if the following is completed:

• [ ] Generic projections in Horace https://github.com/pace-neutrons/Horace/issues/34
• [ ] #197

Worth investigating:

• [ ] https://github.com/pace-neutrons/Pace-Project-Plan/issues/165
• [ ] https://github.com/pace-neutrons/Pace-Project-Plan/issues/164
• [ ] https://github.com/pace-neutrons/Euphonic/issues/145

Old/outdated tasks:

• [x] Old overall powders plan https://github.com/pace-neutrons/Pace-Project-Plan/issues/25
• [x] https://github.com/pace-neutrons/Pace-Project-Plan/issues/163, duplicate of Euphonic 145 above
• [x] https://github.com/pace-neutrons/Pace-Project-Plan/issues/115
• [x] https://github.com/pace-neutrons/Pace-Project-Plan/issues/88
• [x] https://github.com/pace-neutrons/Pace-Project-Plan/issues/86

[ajjackson]

https://github.com/pace-neutrons/Euphonic/issues/145 is arguably a subset of https://github.com/pace-neutrons/Pace-Project-Plan/issues/163 : the former is random jitter in the r-axis while the latter covers more systematic approaches.

[ajjackson]

Sobol sequences is still worth a look actually: Scipy offers a few quasi-random sequences and it wouldn't be much work to add them to the menu. https://docs.scipy.org/doc/scipy/reference/stats.qmc.html