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pc494 / orix

This is pc494's orix fork
GNU General Public License v3.0
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Speed of FZ gridding (needs profiling) #14

Open pc494 opened 5 years ago

pc494 commented 5 years ago

Currently the starting generation (in euler angles) is very time consuming. It seems likely that you could restrict the range of euler angles considered (before considering the axis-angle) and thus save some time.

pc494 commented 5 years ago

Euler angle restriction is generally based on working in rzxz - so it seems likely a "experimental approach" will be needed to find solutions in 'szxz' (see for example section 6.3.2 in Orientations and Rotations: A.Morawiec)

pc494 commented 5 years ago

That said, producing grid in 'szxz', converting to 'rzxz', cutting out the zone (given in full on page 103 of Orientations and Rotations) and then converting back to 'szxz' might do the trick (all but the cubic case). Need to profile first. Also a speed up associated with solving #15 might make this redundant.