[cctbxbb] Reindexing matrix -> transform orientation matrix

Winter, G (Graeme) Graeme.Winter at Diamond.ac.uk
Tue May 5 02:28:29 PDT 2009

Hi Folks,
I'm just trying to figure out how to do the following, given a triclinic
orientation matrix (real or reciprocal space, differ by .inverse() ->
triclinic unit cell)
(like iotbx.lattice_symmetry) stuff -> set of unit cell, Bravais lattice
options with reindex operations
apply reindex operation to orientation matrix -> new basis a, b, c
The former I have historically done using iotbx.lattice_symmetry but
given the move from python to cctbx.python, it seems wasteful. I looked
at the source code but got a little confused. The latter seems to be
more problematic - even reconstructing the change of basis from a known
reindexing operation I don't seem to be able to get the right answer :o(
Has anyone done anything like this with the CCTBX tools?
The context is autoindexing with XDS using a full sweep's worth of
images, then inspecting the indexes in SPOT.XDS based on the contents of
Graeme Winter
Software and MX Support Scientist
Diamond Light Source
+44 1235 778091 (work)
+44 7786 662784 (work mobile)

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