fix doc for extrapolate_trend and allow period as well
#9510
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…odels.tsa.seasonal.seasonal_decompose
bashtage
requested changes
Feb 18, 2025
| trend = seasonal_decompose(x, period=freq).trend | ||
| assert_equal(trend[0], np.nan) | ||
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| trend = seasonal_decompose(x, period=freq, extrapolate_trend=5).trend |
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Could you rename Freq to period in these tests? Sounds like Freq is not used at all, aside from the keyword.
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Good point. Done
Also changed it here: https://github.com/turbotimon/statsmodels/blob/031428a03473fb36b4b5bad5155afc246a28673b/statsmodels/tsa/tests/test_seasonal.py#L941
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| if extrapolate_trend == "freq": | ||
| # 'freq' is still accepted for legacy purposes | ||
| if extrapolate_trend in ("freq", "period"): |
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Ideally we would deprecate 'freq' here and warn that 'freq' will error after the 0.16 release.
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Agree. Can you please check and tell me if I need to do something more with respect to deprecating it?
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extrapolate_trendinseasonal_decomposewrong description offreqinstead ofperiod#9509NumPy's guide.
Proposed changes with explanation, see #9509
It's my "very first issue" for statmodels, please tell me if something needs to be improved