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rwavelet (version 0.4.2)

Wavelet Analysis

Description

Perform wavelet analysis (orthogonal,translation invariant, tensorial, 1-2-3d transforms, thresholding, block thresholding, linear,...) with applications to data compression, denoising/regression or clustering. The core of the code is a port of 'MATLAB' Wavelab toolbox written by D. Donoho, A. Maleki and M. Shahram.

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Install

install.packages('rwavelet')

Monthly Downloads

382

Version

0.4.2

License

LGPL (>= 2)

Issues

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Repository

https://github.com/fabnavarro/rwavelet

Maintainer

Navarro Fabien

Last Published

August 28th, 2026

Functions in rwavelet (0.4.2)

Make artificial 1-d signal

cameraman Image

Replicate and tile an array

block_partition2d

Construct 2d block partition

Minimax Thresholding

Hi-Pass Upsampling operator; periodized

Lo-Pass Upsampling operator; periodized

Adaptive Threshold Selection Using Principle of SURE

Signal/Noise ratio

Invert Translation Invariant Wavelet Transform

Inverse Wavelet Transform (periodized, orthogonal)

Generation of Gaussian White Noise

Apply Shrinkage to Wavelet Coefficients

Circular right shift of 1-d signal

Apply Hard Threshold

Forward Wavelet Transform (periodized, orthogonal)

Translation Invariant Forward Wavelet Transform

Convolution tool for two-scale transform

3-d Shepp-Logan phantom

Nuclear magnetic resonance (NMR) signal

Visually calibrated Adaptive Smoothing

Wavelet-based Feature EXtraction

Packet table indexing

Find length and dyadic length of square matrix

Apply Universal Thresholding to Wavelet Coefficients

Make signal a row vector

invblock_partition2d

Inversion of the 2d block partition

invblock_partition

Inversion of the 1d block partition

Upsampling operator

Apply Soft Threshold

Adaptive Threshold Selection Using Principle of SURE

Generate Orthonormal QMF Filter for Wavelet Transform

Plot 1-d signal as baseline with series of spikes

Make artificial signal

block_partition

Construct 1d block partition

Convolution tool for two-scale transform

Find length and dyadic length of array

Find length and dyadic length of square array

Spike-plot display of wavelet coefficients

Index entire j-th dyad of 1-d wavelet xform

Circular left shift of 1-d signal

2d Wavelet Block thresholding

Lo-Pass Downsampling operator (periodized)

2-d Translation Invariant Forward Wavelet Transform

Hi-Pass Downsampling operator (periodized)

2-Fold Cross Validation for linear estimator

1d wavelet Block Thresholding

2-d tensor wavelet transform (periodized, orthogonal).

Circular Shifting of a matrix/image

2-d MRA Forwad Wavelet Transform (periodized, orthogonal)

3-d MRA Forward Wavelet Transform (periodized, orthogonal)

Inverse 2-d MRA Wavelet Transform (periodized, orthogonal)

Invert 2-d Translation Invariant Wavelet Transform

Inverse 2-d Tensor Wavelet Transform (periodized, orthogonal)

Inverse 3-d MRA Wavelet Transform (periodized, orthogonal)

Apply (-1)^t modulation

Apply Shrinkage with level-dependent Noise level estimation

Median Absolute Deviation

Apply James-Stein Threshold