6.11.4.2.1.1.20. statsmodels.sandbox.tsa.fftarma.ArmaFft.padarr¶

ArmaFft.padarr(arr, maxlag, atend=True)[source]¶

pad 1d array with zeros at end to have length maxlag function that is a method, no self used

Parameters:

arr : array_like, 1d

array that will be padded with zeros

maxlag : int

length of array after padding

atend : boolean

If True (default), then the zeros are added to the end, otherwise to the front of the array

Returns:

arrp : ndarray

zero-padded array

Notes

This is mainly written to extend coefficient arrays for the lag-polynomials. It returns a copy.