statsmodels.tsa.arima_process.lpol2index

statsmodels.tsa.arima_process.lpol2index(ar) [source]

Remove zeros from lag polynomial

Parameters: ar (array_like) – coefficients of lag polynomial
Returns:
  • coeffs (array) – non-zero coefficients of lag polynomial
  • index (array) – index (lags) of lag polynomial with non-zero elements

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© 2006–2008 Scipy Developers
© 2006 Jonathan E. Taylor
Licensed under the 3-clause BSD License.
http://www.statsmodels.org/stable/generated/statsmodels.tsa.arima_process.lpol2index.html