statsmodels.sandbox.tsa.fftarma.ArmaFft.arma2ma

ArmaFft.arma2ma(lags=None)

A finite-lag approximate MA representation of an ARMA process.

Parameters
lagsint

The number of coefficients to calculate.

Returns
ndarray

The coefficients of AR lag polynomial with nobs elements.

Notes

Equivalent to arma_impulse_response(ma, ar, leads=100)