[Chimera-users] Euler angles in "Transform coordinates" tool

Dan Cohen bojemoi at gmail.com
Mon Jul 15 07:03:32 PDT 2013

Hello all,

I have been wrecking my mind in trying to use the "Transform coordinates"
tool to apply a rotation to a PDB file based on Euler angles taken from
IMP. I focused my problem to the following :

According to IMP, they use the ZXZ notation in the original (lab)
coordinate system.

According to my understanding of the chimera docs, you use ZXZ in the self
(rotating) coordinate system.

I have been trying to convert between those two using a python library I
found on the net but keep on getting results that either show I'm missing
something or a bug in somewhere. (It's called transformations.py by
Christoph Gohlke)

Are you aware of any issues or similar problems? I saw somewhere that
someone mentioned a similar problem that was due to PDB header file with
weird axis origin, but i wasn't able to get any more info.

Will be thankful for any hint,
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