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hht (version 2.1.3)

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

328

Version

2.1.3

License

GPL (>= 3)

Maintainer

Daniel C Bowman

Last Published

May 18th, 2016

Functions in hht (2.1.3)

FTGramImage

Display Fourier spectrogram
PlotIMFs

Display IMFs
CEEMD

Complete Ensemble Empirical Mode Decomposition
HilbertTransform

The Hilbert transform
EEMD

Ensemble Empirical Mode Decomposition
EvolutiveFFT

Calculate the evolutive Fourier spectrogram.
CombineTrials

Gather EEMD trial files
Sig2IMF

Empirical Mode Decomposition wrapper
HHSpectrum

Generate Hilbert spectrum
PrecisionTester

Test numerically determined instantaneous frequency against exact instantaneous frequency
HilbertEnvelope

Instantaneous amplitude
HHTPackagePlotter

Set up spectrogram figure
HHRender

Render Hilbert spectrogram
EEMDCompile

Process EEMD results
HHGramImage

Display Hilbert spectrogram
InstantaneousFrequency

Derive instantaneous frequency
sig

Transitory Seismic Event at Deception Island Volcano
tt

Ocean Bottom Seismometer Sample Rate
EEMDResift

Resift averaged IMFs from EEMD
HHSpecPlot

Display Hilbert periodogram