(self)
Returns the data type for the numpy structured array.

    It is recommended to define a list of tuples: (name, datatype, shape)
    Reference: https://docs.scipy.org/doc/numpy-1.15.0/user/basics.rec.html
    Ex:
      return [('motor_angles', np.float64, (8, ))]  # motor angle sensor
      return [('IMU_x', np.float64), ('IMU_z', np.float64), ] # IMU

    Returns:
      datatype: a list of data types.
Returns the data type for the numpy structured array.
Returns the data type for the numpy structured array .
def get_observation_datatype(self):
    """Returns the data type for the numpy structured array.

    It is recommended to define a list of tuples: (name, datatype, shape)
    Reference: https://docs.scipy.org/doc/numpy-1.15.0/user/basics.rec.html
    Ex:
      return [('motor_angles', np.float64, (8, ))]  # motor angle sensor
      return [('IMU_x', np.float64), ('IMU_z', np.float64), ] # IMU

    Returns:
      datatype: a list of data types.
    """
    pass
def get_observation_datatype ( self ) : pass