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

Returns:

arrp – zero-padded array

Return type:

ndarray

Notes

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