Function to estimate the "dominant" frequency of a periodic time series signal.
numeric vector: input vector (time series)
logical: whether to plot a periodogram
This function uses Fourier decomposition to determine the 'major' frequency of a time series. Technically this is the frequency of the Fourier component with the highest variance. The function is used by filterTSeriesSSA to determine the frequencies of the individual SSA components.
Frequency of the Fourier component with the highest variance [1/time steps]
Jannis v. Buttlar
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