Time-Frequency methods
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class
periodicity.timefrequency.HHT(frequencies, emd=None, method='DQ', norm_type='spline', norm_iter=10, smooth_width=None) Bases:
objectHilbert-Huang Transform
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_normalize(mode, eps=1e-06, pad_width=2) Huang et al. (2009)
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_spectrogram(freq_grid, freq, amp)
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class
periodicity.timefrequency.WPS(periods) Bases:
objectWavelet Power Spectrum using Morlet wavelets.
- Parameters
periods (array-like) – Periods to consider, in the same time units as the input signal.
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coi(coi_samples=100) - coi_samples: int, optional
Number of samples of the Cone of Influence (COI). Used for plotting (default is 100).
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gwps(tmin=None, tmax=None)
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property
mask_coi
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masked_gwps(tmin=None, tmax=None)
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masked_sav(pmin=None, pmax=None)
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plot_coi(coi_samples=100, **kwargs)
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sav(pmin=None, pmax=None)