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hht (version 2.1.6)

The Hilbert-Huang Transform: Tools and Methods

Description

Builds on the EMD package to provide additional tools for empirical mode decomposition (EMD) and Hilbert spectral analysis. It also implements the ensemble empirical decomposition (EEMD) and the complete ensemble empirical mode decomposition (CEEMD) methods to avoid mode mixing and intermittency problems found in EMD analysis. The package comes with several plotting methods that can be used to view intrinsic mode functions, the HHT spectrum, and the Fourier spectrum.

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Version

Install

install.packages('hht')

Monthly Downloads

396

Version

2.1.6

License

GPL (>= 3)

Maintainer

Last Published

March 13th, 2023

Functions in hht (2.1.6)

EEMDCompile

Process EEMD results
EEMD

Ensemble Empirical Mode Decomposition
EvolutiveFFT

Calculate the evolutive Fourier spectrogram.
EEMDResift

Resift averaged IMFs from EEMD
CEEMD

Complete Ensemble Empirical Mode Decomposition
CombineTrials

Gather EEMD trial files
FTGramImage

Display Fourier spectrogram
HHRender

Render Hilbert spectrogram
HHGramImage

Display Hilbert spectrogram
HHSpecPlot

Display Hilbert periodogram
HilbertEnvelope

Instantaneous amplitude
tt

Ocean Bottom Seismometer Sample Rate
HilbertTransform

The Hilbert transform
sig

Transitory Seismic Event at Deception Island Volcano
HHSpectrum

Generate Hilbert spectrum
InstantaneousFrequency

Derive instantaneous frequency
HHTPackagePlotter

Set up spectrogram figure
PlotIMFs

Display IMFs
Sig2IMF

Empirical Mode Decomposition wrapper
PrecisionTester

Test numerically determined instantaneous frequency against exact instantaneous frequency