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rwavelet (version 0.4.0)

Wavelet Analysis

Description

Perform wavelet analysis (orthogonal, translation invariant, tensorial, 1-2-3d transforms, thresholding, block thresholding, linear,...) with applications to data compression or denoising/regression. 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

157

Version

0.4.0

License

LGPL (>= 2)

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Repository

http://github.com/fabnavarro/rwavelet

Maintainer

Navarro Fabien

Last Published

March 14th, 2019

Functions in rwavelet (0.4.0)

Apply Hard Threshold.

Translation Invariant Forward Wavelet Transform.

Median Absolute Deviation

Packet table indexing.

Invert translation invariant wavelet transform.

Find length and dyadic length of square matrix.

Spike-plot display of wavelet coefficients.

Inverse Wavelet Transform (periodized, orthogonal).

Inverse 3-d MRA wavelet transform (periodized, orthogonal).

Plot 1-d signal as baseline with series of spikes.

Inverse 2-d MRA wavelet transform (periodized, orthogonal).

2-Fold Cross Validation for linear estimator

Hi-Pass Upsampling operator; periodized

Apply Soft Threshold.

Generate Orthonormal QMF Filter for Wavelet Transform.

Make artificial signal.

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

Generation of Gaussian White Noise.

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

Make artificial 1-d signal.

Find length and dyadic length of array

invblock_partition

Inversion of the 1d block partition

Convolution Tool for Two-Scale Transform.

Invert 2-d Translation Invariant Wavelet Transform.

Apply (-1)^t modulation

Signal/Noise ratio

Nuclear magnetic resonance (NMR) signal.

Make signal a row vector

Find length and dyadic length of square array.

block_partition2d

Construct 2d block partition

Convolution Tool for Two-Scale Transform.

3d Shepp-Logan phantom

block_partition

Construct 1d block partition

invblock_partition2d

Inversion of the 2d block partition

Lo-Pass Upsampling operator; periodized

Circular left shift of 1-d signal

Upsampling operator

Replicate and tile an array.

Circular right shift of 1-d signal

Circular Shifting of a matrix/image,

Hi-Pass Downsampling operator (periodized)

Lo-Pass Downsampling operator (periodized)

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

2-D Translation Invariant Forward Wavelet Transform.

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

1d Wavelet Block thresholding

3-d MRA wavelet transform (periodized, orthogonal).

Forward Wavelet Transform (periodized, orthogonal).