chx_generic_functions.py 文件源码

def ployfit( y, x=None, order = 20 ):
    '''
    fit data (one-d array) by a ploynominal function
    return the fitted one-d array
    '''
    if x is None:
        x = range(len(y))
    pol = np.polyfit(x, y, order)
    return np.polyval(pol, x)