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# scikits.statsmodels.sandbox.tsa.arma_acf

`scikits.statsmodels.sandbox.tsa.``arma_acf`(ar, ma, nobs=10)

  theoretical autocovariance function of ARMA process

  Parameters: | ar : array_like, 1d coefficient for autoregressive lag polynomial, including zero lag ma : array_like, 1d coefficient for moving-average lag polynomial, including zero lag
  Returns: | acovf : array autocovariance of ARMA process given by ar, ma

  See also

  `arma_acovf`, `acf`, `acovf`

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