def stereonet2xyz(lon, lat):
    """
    Converts a sequence of longitudes and latitudes from a lower-hemisphere
    stereonet into _world_ x,y,z coordinates.

    Parameters
    ----------
    lon, lat : array-likes
        Sequences of longitudes and latitudes (in radians) from a
        lower-hemisphere stereonet

    Returns
    -------
    x, y, z : arrays
        The world x,y,z components of the vectors represented by the lon, lat
        coordinates on the stereonet.
    """
    lon, lat = np.atleast_1d(lon, lat)
    x, y, z = sph2cart(lon, lat)
    return y, z, -x
def stereonet2xyz ( lon , lat ) : lon , lat = np . atleast_1d ( lon , lat ) x , y , z = sph2cart ( lon , lat ) return y , z , - x
Converts a sequence of longitudes and latitudes from a lower-hemisphere
    stereonet into _world_ x,y,z coordinates.

    Parameters
    ----------
    lon, lat : array-likes
        Sequences of longitudes and latitudes (in radians) from a
        lower-hemisphere stereonet

    Returns
    -------
    x, y, z : arrays
        The world x,y,z components of the vectors represented by the lon, lat
        coordinates on the stereonet.