statsmodels.sandbox.tsa.fftarma.ArmaFft.acovf¶

ArmaFft.acovf(nobs=None)¶

Theoretical autocovariances of stationary ARMA processes

Parameters:¶

nobs : int¶

The number of terms (lags plus zero lag) to include in returned acovf.

Returns:¶

The autocovariance of ARMA process given by ar, ma.

Return type:¶

ndarray

See also

arma_acf

Autocorrelation function for ARMA processes.

acovf

Sample autocovariance estimation.

References