[Xplor-nih] Torsion angles with correct signs

[Charles at Schwieters.org]

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Hello Jakob--

> 
> does anyone of you know a script calculating torsion angles (in  
> particular psi, phi, omega and chi1) in proteins with the correct sign.
> Python modules like BioPython and MMlib can calculate torsion angles  
> but with no sign. Derivation of the sign is far from trivial.
> 

eginput/protG/tang.py in the Xplor-NIH distribution should do what you
want. 

best regards--
Charles
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