ecdf : empirical cumulative distribution function

ecdf.py

import numpy as np

def ecdf(data):
    """Returns (x) the sorted data and (y) the empirical cumulative-proportion
    of each datum.
    
    Parameters
    ----------
    data : numpy.ndarray, size-N
    
    Returns
    -------
    Tuple[numpy.ndarray shape-(N,), numpy.ndarray shape-(N,)]
        Sorted data, empirical CDF values"""
    data = np.asarray(data).ravel()
    y = np.linspace(1 / len(data), 1, len(data))
    x = np.sort(data)
    return x, y