stereonet_math.py 文件源码

def plunge_bearing2pole(plunge, bearing):
    """
    Converts the given `plunge` and `bearing` in degrees to a strike and dip
    of the plane whose pole would be parallel to the line specified. (i.e. The
    pole to the plane returned would plot at the same point as the specified
    plunge and bearing.)

    Parameters
    ----------
    plunge : number or sequence of numbers
        The plunge of the line(s) in degrees. The plunge is measured in degrees
        downward from the end of the feature specified by the bearing.
    bearing : number or sequence of numbers
        The bearing (azimuth) of the line(s) in degrees.

    Returns
    -------
    strike, dip : arrays
        Arrays of strikes and dips in degrees following the right-hand-rule.
    """
    plunge, bearing = np.atleast_1d(plunge, bearing)
    strike = bearing + 90
    dip = 90 - plunge
    strike[strike >= 360] -= 360
    return strike, dip