pytransform3d.rotations.quaternion_double

pytransform3d.rotations.quaternion_double(q)

Create another quaternion that represents the same orientation.

The unit quaternions q and -q represent the same orientation (double cover).

Parameters:

qarray-like, shape (4,)

Unit quaternion.

Returns:

q_doublearray, shape (4,)

-q

See also

pick_closest_quaternion

Picks the quaternion that is closest to another one in Euclidean space.