ArmaFft.invertroots(retnew=False)
Make MA polynomial invertible by inverting roots inside unit circle
Parameters: | retnew (boolean) – If False (default), then return the lag-polynomial as array. If True, then return a new instance with invertible MA-polynomial |
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Returns: |
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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.sandbox.tsa.fftarma.ArmaFft.invertroots.html