Quaternion#

class qiskit.quantum_info.Quaternion(data)[ソース]#

ベースクラス: object

A class representing a Quaternion.

Methods

classmethod from_axis_rotation(angle, axis)[ソース]#

Return quaternion for rotation about given axis.

パラメータ:

  • angle (float) – Angle in radians.

  • axis (str) – Axis for rotation

戻り値:

Quaternion for axis rotation.

戻り値の型:

Quaternion

例外:

ValueError – Invalid input axis.

classmethod from_euler(angles, order='yzy')[ソース]#

Generate a quaternion from a set of Euler angles.

パラメータ:

  • angles (array_like) – Array of Euler angles.

  • order (str) – Order of Euler rotations. 『yzy』 is default.

戻り値:

Quaternion representation of Euler rotation.

戻り値の型:

Quaternion

norm()[ソース]#

Norm of quaternion.

normalize(inplace=False)[ソース]#

Normalizes a Quaternion to unit length so that it represents a valid rotation.

パラメータ:

inplace (bool) – Do an inplace normalization.

戻り値:

Normalized quaternion.

戻り値の型:

Quaternion

to_matrix()[ソース]#

Converts a unit-length quaternion to a rotation matrix.

戻り値:

Rotation matrix.

戻り値の型:

ndarray

to_zyz()[ソース]#

Converts a unit-length quaternion to a sequence of ZYZ Euler angles.

戻り値:

Array of Euler angles.

戻り値の型:

ndarray