OEGetPsi

OEGetPsi(res: OEHierResidue) -> float
OEGetPsi(atom: OEAtomBase, assume: int) -> float

Returns the \(\psi\) (psi) angle in radians for a residue specified by its OEHierResidue class or by any OEAtomBase from the residue. The molecule must have 3D coordinates assigned.