from_matrix#

classmethod Rotation.from_matrix(matrix: Union[ndarray, tuple, list]) → Rotation[source]#

Return rotations from the orientation matrices [Rowenhorst et al., 2015].

Parameters:

matrix: Sequence of orientation matrices with the last two dimensions of shape (3, 3).

Returns:

r: Rotations.

Examples

>>> from orix.quaternion import Rotation
>>> r = Rotation.from_matrix([np.identity(3), np.diag([1, -1, -1])])
>>> r
Rotation (2,)
[[1. 0. 0. 0.]
 [0. 1. 0. 0.]]