polar_to_cartesian
==================

.. py:function:: luminet.spatial.polar_to_cartesian(th: float | numpy.ndarray, radius: float | numpy.ndarray, rotation: float = 0) -> float | numpy.ndarray

   Convert polar to cartesian coordinates.

   :Parameters: * **th** (*float | np.ndarray*) -- angle in radians
                * **radius** (*float | np.ndarray*) -- radius
                * **rotation** (*float*) -- Amount of radians to rotate the result. Useful when messing with the orientation of polar plots.

   :returns: Tuple[float | :class:`~np.ndarray`] -- x and y coordinates