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gasper (version 1.1.1)

Graph Signal Processing

Description

Provides the standard operations for signal processing on graphs: graph Fourier transform, spectral graph wavelet transform, visualization tools. It also implements a data driven method for graph signal denoising/regression, for details see De Loynes, Navarro, Olivier (2019) . The package also provides an interface to the SuiteSparse Matrix Collection, , a large and widely used set of sparse matrix benchmarks collected from a wide range of applications.

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Install

install.packages('gasper')

Monthly Downloads

199

Version

1.1.1

License

LGPL (>= 2)

Issues

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Maintainer

Fabien Navarro

Last Published

February 16th, 2021

Functions in gasper (1.1.1)

GVN

Graph Von Neumann Estimator.
NYCdata

NYC network.
analysis

Analysis operator.
SURE_MSEthresh

Stein's Unbiased Risk Estimate.
SUREthresh

Stein's Unbiased Risk Estimate.
gasper-package

gasper: Graph Signal Processing
pittsburgh

Pittsburgh network.
minnesota

Minnesota road network.
inverse_sgwt

Compute Inverse Spectral Graph Wavelet Transform.
smoothmodulus

Modulus of smoothness.
full

Convert symmetric sparse matrix to full matrix.
rlogo

R logo graph.
swissroll

Swiss roll graph generation
fullup

Convert symmetric sparse matrix to full matrix.
plot_signal

Plot a signal on top of a given graph
laplacian_mat

Laplacian matrix.
synthesis

Synthesis operator.
matmult

Matrix multiplication
download_graph

Download sparse matrix form the SuiteSparse Matrix Collection.
adjacency_mat

Compute the adjacency matrix of the gaussian weighted graph
eigendec

Spectral decomposition of a symetric matrix
eigensort

Spectral decomposition of a symetric matrix.
randsignal

Generate random signal with varying regularity.
plot_filter

Plot tight-frame filters.
zetav

Evaluates tight-frame kernel functions
plot_graph

Graph plot
tight_frame

Tight-frame computation.
forward_sgwt

Compute Forward Spectral Graph Wavelet Transform.
PSNR

Peak Signal to Noise Ratio.
betathresh

Apply Beta Threshold.
SNR

Signal to Noise Ratio.
HPFVN

High Pass Filter Von Neumann Estimator.