util.py 文件源码

def ecdf(x):
    ''' Computes the empirical cumulative distribution function of a dataset

    Args:
        x (`iterable`): Data.

    Returns:
        tuple containing:
            `numpy.ndarray`: sorted data.

            `numpy.ndarray`: cumulative distribution function of the data.

    '''
    xs = np.sort(x)
    ys = np.arange(1, len(xs) + 1) / float(len(xs))
    return xs, ys