transforms.py 文件源码

def unitize(v):
    """
    UNIT Unitize a vector

    :param v: given unit vector
    :return: a unit-vector parallel to V.

    Reports error for the case where V is non-symbolic and norm(V) is zero
    """
    n = np.linalg.norm(v, "fro")
    # Todo ISA
    if n > np.spacing([1])[0]:
        return v / n
    else:
        raise AttributeError("Vector has zero norm")


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