tomodrgn.so3_grid.hopf_to_quat

hopf_to_quat(theta: ndarray, phi: ndarray, psi: ndarray) → ndarray

Transform Hopf coordinates to quaternions

Parameters:

• theta – [0, pi), parameterizes spherical coordinates on S2 together with phi

• phi – [0, 2pi), parameterizes spherical coordinates on S2 together with theta

• psi – [0, 2pi), parameterizes circle S1

Returns:

quaternions