order,)``, where
        :math:`order = (deg[0]+1)*(deg([1]+1)*(deg[2]+1)`.  The dtype will
        be the same as the converted `x`, `y`, and `z`.

    See Also
    --------
    polyvander, polyvander3d, polyval2d, polyval3d

    Notes
    -----

    .. versionadded:: 1.7.0

    r‹