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updated 15 hours ago

Chebfun by Chebfun Team

Chebfun is an open-source package for numerical computation with functions to 15-digit accuracy (approximation, interpolation, quadrature)

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updated 1 month ago

Stokes solver by Zoltán Csáti

Solves the steady Stokes equation with Chebyshev pseudospectral method (stokes, fluid, spectral)

LegGaussLobNodeWeight.m

Pbar_problem.m

Pl_problem.m

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updated 3 months ago

Spectral Clustering by Elie

Full Solution For Spectral Clustering (spectral, spectral clustering, clustering)

gaussdist(xi, xj, sigma)

generatedata(nbsamples, nbclasses, dim, dist, details, bl...

invdist(xi, xj)

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updated 3 months ago

Spectral Clustering by Elie

Assemble unknown data into cluster (clustering, cluster, spectral)

spcl(data, nbclusters, varargin)

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updated 8 months ago

Fourier Series Example by Dimitrios Piretzidis

Fourier series representation of a 3rd degree polynomial function. (fourier, series, polynomial)

fourier_gui(varargin)

plots_gui(varargin)

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updated 1 year ago

Collocation-based spectral-element toolbox by Nathaniel Jewell

Functions and example codes for a collocation spectral-element scheme (Chebyshev or Legendre) (numerical, spectral, pseudospectral)

...

...

[x,D]=legDc(N);

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updated 2 years ago

Using MATLAB for Bearing Fault Analysis by Roni Peer

Ball Bearings can have several faults, which result in different signals. This program shows this. (bearing, analysis, signal processing)

[K1, K2, K3]=kurtpar(Y,t)

bearing(P, t)

bearingAnalysis(varargin)

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updated almost 4 years ago

Beam Spectral Element by Paulo J. Paupitz Goncalves

Calculate the dynamic stiffness using spectral element for a beam in space (aerospace, aeronautics, aerodef)

dynamic_stiff(varargin)

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updated 4 years ago

Laguerre spectral/pseudospectral library by Nathaniel Jewell

Galerkin, Collocation and Pseudospectral numerical schemes based on scaled Laguerre functions. (laguerre, spectral, pseudospectral)

LFunc(x,N,k)

LFuncs(x,N,k)

LG(N,k)

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updated 5 years ago

Power spectral estimation with error bars by Rune W Berg

Power spectral estimation using multitaper, single or multiple traces and estimating error bars. (power, spectrum, spectral)

Power_multi_traces(trace_a,num_win,dt,paddingtimes)

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updated 5 years ago

SPIDER simulation by Adam Wyatt

Simulates spectral phase interferometry for direct electric-field reconstruction (SPIDER). (chemistry, physics, spider)

SPIDER_simulation.m

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updated 7 years ago

FourierTransform.m by Carlos Adrian Vargas Aguilera

Complex Fourier Transform of a real time series. From zero to Nyquist frequency. (spectral analysis, spectral, fourier series)

fouriertransform.m

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updated almost 8 years ago

Power Spectral Density by Tom Irvine

Power spectral density of a time history. (spectral analysis, psd, power)

FFT_core.m

PSD.m

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updated almost 8 years ago

Vibration Response Spectrum by Tom Irvine

This program calculates the VRS for a base input PSD. (spectral analysis, vibration response sp..., vrs)

vrs_engine(fi,ai,damp,df);

VRS.m

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updated 8 years ago

SpecCentroid by Frederik Nagel

Spectral centroid of a sound. (audio processing, video processing, centroid)

centroid.m

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updated almost 9 years ago

Fast Chebyshev Differentiation by Greg von Winckel

Computes the numerical derivative on the Chebyshev grid. (approximation, interpolation, chebyshev)

Dx=fastdiff(x);

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updated almost 9 years ago

Power Spectral Density Integration by Tom Irvine

This program calculates the overall GRMS for a PSD function. (spectral analysis, power spectral densit..., psd)

APSD_DPSD(f,a)

APSD_VPSD(f,a)

calculate_PSD_slopes(f,a)

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updated 9 years ago

Radial Quadrature and Spectral Methods by Greg von Winckel

Weights, nodes, and spectral methods matices for radial problems (integration, radial, equations)

[r,w,P,Bs,Ds,Dp]=radialquad(N,k,R)

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updated 9 years ago

zoom FFT by Tom Irvine

This program calculates the zoom FFT of a time history. (spectral analysis, zoom fft, fast fourier transfor...)

zoomFFT.m

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updated almost 10 years ago

Spectral Mask Tests by Mike Donovan

Test whether a filter's magnitude response fits within a spectral mask. (dsp, magnitude, overlay)

FilterMaskFigure(b, a, x1, y1)

FilterMask1.m

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updated 10 years ago

Legendre Collocation Differentiation by Greg von Winckel

Numerically differentiates functions sampled at the LGL nodes. (differential equation..., legendre, polynomials)

[x,D]=legDc(N);

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updated 11 years ago

pmtmPH.m by Peter Huybers

Spectral estimation using the Thomson multi-taper method with accurate error estimates. (spectral analysis, signal processing, spectral)

pmtmPH(x,dt,nw,qplot,nfft);

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