tsa
ArmaFft.
acf
Theoretical autocorrelation function of an ARMA process.
lags : int
The number of terms (lags plus zero lag) to include in returned acf.
ndarray
The autocorrelations of ARMA process given by ar and ma.
See also
arma_acovf
Autocovariances from ARMA processes.
Sample autocorrelation function estimation.
acovf
Sample autocovariance function estimation.