grogupy._core.RotMa2b

grogupy._core.RotMa2b(a: ndarray[Any, dtype[_ScalarType_co]], b: ndarray[Any, dtype[_ScalarType_co]], eps: float = 1e-10) → ndarray[Any, dtype[_ScalarType_co]][source]

Definition of rotation matrix rotating unit vector a to unit vector b.

Function returns array R such that R @ a = b holds.

Parameters

a: NDArray
First vector

b: NDArray
Second vector

eps: float, optional
Cutoff for small elements in the resulting matrix. Defaults to 1e-10

Returns

NDArray
The rotation matrix with the above property