Frequency has units (1/wavelength), and this is just a question of using
different units. For monthly series, is this per month or per year?
The functions were written for R at different times by different people:
it would seem to make sense to alter spec.ar to use the per year
interpretation.
Dear list,
I've recently become interested in comparing the spectral estimates
using the different methods ("pgram" and "ar") in the spectrum()
function in the stats package.
With many thanks to the authors of these complicated functions, I
would like to point out what looks to me like a bit of a
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