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updated 7 days ago

Extended DFT by Vilnis Liepins

Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector. (spectral analysis, fft, dft)

Y=inedft(F,fn,tn)

[F,S,Stopit]=edft(X,N,I,W)

[F,S,Stopit]=nedft(X,tk,fn,I,W)

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updated 7 days ago

Interpolant/Extrapolant 2D/3D data by Mohammad Abouali

Creates Interpolant/Extrapolant for efficient mapping of data between 2D and 3D grids. (interpolationextrapol..., interpolation, extrapolation)

P=ConstructCubicInterpolator(xs,ys,xd,yd,nInterp)

P=ConstructProjector2D(xs,ys,xd,yd,nPoly,nInterp)

P=ConstructProjector3D(xs,ys,zs,xd,yd,zd,nPoly,nInterp)

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updated 4 months ago

RegularizeData3D by Jamal

Produces a smooth surface from scattered 3D input data. (3d data, regularizing, approximation)

RegularizeData3D(x,y,z,xnodes,ynodes,varargin)

TestRegularizeData3D_Bicubic_vs_Bilinear.m

TestRegularizeData3D_Coarse_v_Fine_Output_Grids.m

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updated 11 months ago

Inpaint over missing data in 1-D, 2-D, 3-D,... N-D arrays by Damien Garcia

Y = INPAINTN(X) computes the missing data in the N-D array X. (inpaint, griddatan, interpolation)

inpaintn(x,n,y0,m)

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updated 1 year ago

TEMPORAL DISAGGREGATION LIBRARY by Enrique M. Quilis

Temporal disaggregation of economic time series (statistics, econometrics, time series)

[]=mtd_plot(res)

[]=td_plot(res)

[]=tduni_plot(res)

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updated almost 2 years ago

LERP: fast n-dimensional linear interpolation & extrapolation by Sky Sartorius

Interpolate from X and Y data and n-dim array. Can also extrapolate above/below X if desired. (interp, interp1, interp1q)

lerp(x,y,xi,extrapspan)

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updated 2 years ago

inpaint_nans by John D'Errico

Interpolates (& extrapolates) NaN elements in a 2d array. (nan, inpainting, replace)

(nn(:,1)<1)|(nn(:,1)>n)|(nn(:,2)<1)|(nn(:,2)>m); nn(L,...

valid{ind}; end end

inpaint_nans_demo.m

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updated 2 years ago

Biorhythm by Cleve Moler

How is your week going? (games, biorhythm, extrapolation)

biorhythm(birthday)

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updated 3 years ago

QUADGR by Jonas Lundgren

Gauss-Legendre quadrature with Richardson extrapolation. (quadrature, integral, approximation)

quadgr(fun,a,b,tol,trace,varargin)

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updated 4 years ago

Surface Fitting using gridfit by John D'Errico

Model 2-d surfaces from scattered data (approximation, interpolation, modeling)

gridfit_demo

gridfit(x,y,z,xnodes,ynodes,varargin)

test_main.m

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updated 5 years ago

Temporal Disaggregation Library by Enrique M. Quilis

Temporal disaggregation of economic time series (statistics, modeling, econometrics)

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updated 5 years ago

Richardson Extrapolation by Rhys

A generalized Richardson extrapolation routine with many bells and whistles. (taylor, richardson, extrapolation)

richardson( A1s, kis, t, exact )

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updated almost 7 years ago

lpredict by Malcolm Lidierth

Data extrapolation through linear prediction (approximation, interpolation, linear)

lpredict.m

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updated almost 10 years ago

extrap1.m by Daniel Feldman

Modified interpolation program. (interpolation, modified, interp1m)

extrap1(x_in,y_in,x_out,method)

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updated 12 years ago

Janni Reto by janni reto

PGC algorithm for extrpolation b-bandlimited functions. (spectral analysis, signal processing, extrapolation)

pgsin.m

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