scipy.spatial.transform.Rotation.

inv#

Rotation.inv()[source]#

Invert this rotation.

Composition of a rotation with its inverse results in an identity transformation.

Returns:

inverseRotation instance: Object containing inverse of the rotations in the current instance.

Notes

Array API Standard Support

inv has experimental support for Python Array API Standard compatible backends in addition to NumPy. Please consider testing these features by setting an environment variable SCIPY_ARRAY_API=1 and providing CuPy, PyTorch, JAX, or Dask arrays as array arguments. The following combinations of backend and device (or other capability) are supported.

Library	CPU	GPU
NumPy	✅	n/a
CuPy	n/a	✅
PyTorch	✅	✅
JAX	✅	✅
Dask	⛔	n/a

See Support for the array API standard for more information.

Examples

>>> from scipy.spatial.transform import Rotation as R
>>> import numpy as np

Inverting a single rotation:

>>> p = R.from_euler('z', 45, degrees=True)
>>> q = p.inv()
>>> q.as_euler('zyx', degrees=True)
array([-45.,   0.,   0.])

Inverting multiple rotations:

>>> p = R.from_rotvec([[0, 0, np.pi/3], [-np.pi/4, 0, 0]])
>>> q = p.inv()
>>> q.as_rotvec()
array([[-0.        , -0.        , -1.04719755],
       [ 0.78539816, -0.        , -0.        ]])