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.