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updated 3 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 3 hours ago

SPLINEFIT by Jonas Lundgren

Fit a spline to noisy data. (spline, splinefit, cubic spline)

SPLINEFIT EXAMPLES

ppdiff(pp,j)

ppint(pp,a,b)

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updated 4 days ago

inpolygons by Kelly Kearney

Finds points inside multiple polygons, holes possible. (approximation, interpolation, polygon)

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updated 4 days ago

2D and 3D Remapping by Mohammad Abouali

Creates Remapper (Interpolant/Extrapolant) for efficient mapping of data on 2D and 3D grids. (interpolation, extrapolation, least square)

Construct_D_Eta(M,N,OpOrder)

Construct_D_Xi(M,N,OpOrder)

Construct_G_U_Eta(M,N,OpOrder)

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updated 16 days ago

vebyk by Rolf Sidler

vebyk performs ordinary kriging and can be easily adapted to other kriging methods. (kriging, 2d, approximation)

buildbigc3(position,anisotropy,nu,range)

buildsmallc3(position,anisotropy,nu,range)

covcalc(lag,nu,a)

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updated 17 days ago

Radial Basis Function Network by Travis Wiens

Simulates and trains Gaussian and polyharmonic spline radial basis function networks. (radial basis function, rbf for suren, radial basis function...)

rbf_integral(Xc,X1,X2,k_i,basisfunction)

rbfn_integral(Xc,X1,X2,W,k_i,basisfunction)

sim_rbf(Xc,X,W,k_i,basisfunction)

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updated 22 days ago

Computational Geometry Toolbox by George Papazafeiropoulos

Convex hull, mesh generation, Delaunay triangulation, Voronoi diagram and other algorithms. (bounding box, concave, convex)

Bounding box of a random point set in 2-dimensional space

Bounding box of a random point set in 3-dimensional space

Bounding box of a random point set in 4-dimensional space

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updated 28 days ago

mq_interpolation.m by Orlando Rodríguez

Multiquadrics interpolation. (approximation, interpolation, multiquadrics)

mq_interpolation(r,f,ri,c)

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updated 28 days ago

triparabolic interpolation by Orlando Rodríguez

Triparabolic function interpolation and calculation of derivatives. (3d, approximation, interpolation)

triparinterp(x,y,z,f,nodes)

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updated 28 days ago

biparabolic interpolation by Orlando Rodríguez

Biparabolic surface interpolation and calculation of derivatives. (approximation, interpolation, derivatives)

biparinterp(x,y,f,nodes)

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updated 28 days ago

piecewise cubic interpolation by Orlando Rodríguez

Code to interpolate function values and corresponding derivatives. (approximation, interpolation, derivatives)

pcinterp( x, y, xi, stype )

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updated 28 days ago

piecewise parabolic interpolation by Orlando Rodríguez

Code to interpolate function values and corresponding derivatives. (approximation, interpolation, derivatives)

ppinterp( x, y, xi )

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updated 29 days ago

MATLAB trilinear interpolation by Mehmet OZTURK

A Matlab mex function to perform trilinear interpolation. (interpolation, signal processing, mex)

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updated 29 days ago

central_diff2(y,deltat,d,a) by Benjamin Strom

Finite difference approximation of any order derivative, any accuracy (interpolation, approximation, algorithm)

central_diff2(y,deltat,d,a)

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updated 1 month ago

nasa/T-MATS by Jeffryes

Simulink Toolbox for the Modeling and Analysis of Thermodynamic Systems, such as gas turbines (simulation, simulink, example)

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updated 1 month ago

interp1gap by Chad Greene

Interpolate over small gaps in x, but not over large gaps in x. (interpolation, interp1, naninterp)

interp1gap documentation

interp1gap(varargin)

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updated 1 month ago

Buck converter - Increased accuracy and simulation speed using interpolation in SimPowerSystems. by Patrice Brunelle

Interpolation method of SPS R2014b to allow larger time step while preserving model accuracy. (accuracy, sampletime, pwm)

DC_DC_BuckConverter.slx

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updated 1 month ago

Perceptual spectral centroid by Christopher Hummersone

Perceptually-informed spectral centroid. (interpolation, audio processing, spectral analysis)

perceptualCentroid(x,fs,varargin)

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updated 1 month ago

repnan by Chad Greene

Replace NaNs in a 1D array by interpolation (interpolation, nan, nans)

repnan documentation

repnan(x,method)

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updated 1 month ago

Mutual_Information && joint_entropy by Amir Pasha Mahmoudzadeh

Takes two images and return the mutual information and joint entropy (image processing, interpolation, registration)

[Mutual_Information,joint_entropy]=MutualInformation(x,y)

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updated 2 months ago

Generate Random Numbers from a 2D Discrete Distribution by Tristan Ursell

Random numbers from any 2D discrete probability distribution, at any resolution. (discrete, distribution, generate)

[x0,y0]=pinky(Xin,Yin,dist_in,varargin)

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updated 2 months ago

3D mesh transform using sparse control points by Daniel Markel

Performs a 3D non-rigid deformation using irregularly placed transformation vectors (non rigid, deformation, sparse)

inhull(testpts,xyz,tess,tol)

mesh_transform3D2(im,bold,bnew,tmesh,X,Y,Z)

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updated 4 months ago

Interpolation Utilities by Joe Henning

A variety of interpolation utilities (interpolation, piecewise interpolati..., cubic interpolation)

baryinv(x, y, xi, c)

cakima(x, y, xi)

cbezier(x, y, xi)

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updated 4 months ago

3D trilinear interpolation using GPU by Jun Tan

3D trilinear interpolation using GPU. 20 times faster. (3d trilinear interpol..., interp3, interpolation)

interp3_gpu(x, y, z, v, xi, yi, zi)

test.m

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updated 5 months ago

3D Linear Interpolation for GPU by Philip

3D Linear Interpolation for GPU (gpu, interpolation, arrayfun)

Vi=interp3gpu(x1,x2,x3,V,x1i,x2i,x3i)

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updated 5 months ago

Graphical User Interface for Solving Ordinary Differential Equations for In-Vitro Infection by Soumya Banerjee

A graphical user interface to solve a set of ordinary differential equations (in-vitro infection) (data import, data export, gui)

odesolver_outline

odecall_eclipse_tcl_jv_local(target,infected1,...

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updated 5 months ago

lagrange.m by Peter Cervelli

A pretty fast Lagrange interpolation algorithm (lagrange, interpolation, gps)

lagrange(X,Y,x,order)

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updated 5 months ago

RViewer by Tony Davis

Image Viewer with Interpolation on Zoom, Multiple Sync (image, display, interpolation)

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updated 6 months ago

TFIData.m by Joshua Hundley

Creates TFI surface of data set fit with splines along the rows and columns of the data set (interpolation, transfinite interpola...)

TFIData(x, y, X, Y, Z)

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updated 6 months ago

Chebfun V4 by Chebfun Team

Numerical computation with functions instead of numbers. (numerical analysis, interpolation, approximation)

A greedy algorithm for choosing interpolation points

A keyhole contour integral

A parameter dependent ODE with breakpoints

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updated 6 months ago

interpm2 by Chad Greene

Densify or interpolate along paths with approximately equal spacing in meters or kilometers. (interpm, interpolation, mapping)

interpm2

interpm2(lat,lon,maxdiff,method,units,tolerance)

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updated 6 months ago

Automated EEG Repair Tool by Kristjan-Julius

Automatically detects and repairs EEG data that is noisy or contains artifacts (eeg, interpolation, automatic)

coreEXE( cfg, data )

defineBadNeigh( cfg, eeg_data )

detectionAlgorithm( prestim, freq, eeg_data )

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updated 6 months ago

Gaussian interpolation with successive corrections by OUC Polar

Code for Gaussian Interpolation with successive corrections (interpolation, gaussian)

gaussian_interpolation.m

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updated 7 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 7 months ago

Bezier Curves (and interactive tools) by Adrian

A matlab class for handling n-dimentional bezier curves, parametrized by control points. (bezier curves, matlab, interpolation)

bezier

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updated 7 months ago

err_sinc_interp.m by Truong

Sinc interpolation to find maximum spectrum (radar, interpolation, sinc)

err_sinc_interp.m

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updated 7 months ago

Periodical Cubic Interpolation by Jerome Bastien

PERIODICAL PIECEWISE CUBIC HERMITE INTERPOLATING POLYNOMIAL: THE FUNCTIONS PERPCHIP AND PERSPLINE (interpolation)

[er0,er1,er2,er3,t1,t2,t3,t4]=compare_perpchip(N,P)

[er0,er1,er2,er3,t1,t2,t3,t4]=compare_perspline(N,P)

[teste,testcroi,xd,yd]=testperpchip(N,x0,y0)

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updated 8 months ago

interpmask - interpolate (tween) logical masks by Sven

interpmask interpolates (or tweens) masks to transition smoothly between shapes in masks (mask, interp1, interpolation)

interpmask( varargin )

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updated 8 months ago

polyfitn by John D'Errico

Polynomial modeling in 1 or n dimensions (polyfit, modeling, regression)

polyfitn_demo

polydern(p,diffvar)

polyfitn(indepvar,depvar,modelterms)

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updated 8 months ago

SLM - Shape Language Modeling by John D'Errico

Least squares spline modeling using shape primitives (spline, splines, cubic)

slm_tutorial

hermite2slm(harray)

lse(A,b,C,d,solverflag,weights)

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updated 8 months ago

idw.m by Andres Tovar

Inverse distance weight function to interpolate values based on the sampled points (metamodel, inverse distance weig..., interpolation)

idw(X0,F0,Xint,p,rad,L)

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updated 9 months ago

Between numbers by Håvard Falck

Find values betwee original values in a vector (interpolation, vector, linear)

intAB.m

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updated 9 months ago

EzyFit 2.42 by Frederic Moisy

A free curve fitting toolbox for Matlab (approximation, interpolation, curve)

Discover Ezyfit: A free curve fitting toolbox for Matlab

about_ef (Ezyfit Toolbox)

axis0 (Ezyfit Toolbox)

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updated 10 months ago

Matrix Difuse Interpolation by David Pineda

Can correct some images with errors (image, interpolation, difuse)

M=interpolacion_matrix(V,x,y, b,c,p,q,factor, factor_inte...

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updated 10 months ago

polyfitZero by Mark Mikofski

Fit polynomial to data, forcing y-intercept to zero or arb. value and slope to zero or arb. value (mathematics, modeling, data exploration)

polyfitZero example

polyfitB(x,y,degree,b)

polyfitB0(x,y,degree,b)

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updated 11 months ago

Newton-Raphson solver by Mark Mikofski

Yet another solver that uses the backslash function to solve a set of non-linear equations. (mathematics, optimization, data exploration)

newtonraphson_example

newtonraphson(fun, x0, options)

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updated 11 months ago

Zero-Order Hold by Michael Weidman

A fast, basic implementation of a ZOH designed to run on vectors/matrices (zoh, zeroorder hold, interpolation)

zoh(t,V,tq,keepNaNs)

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updated 12 months ago

Newton interpolation coefficient by feirg

This function finds the coefficients for Newton interpolation polynomial (newton interpolation, interpolation)

diff_coefficient=NewtonInterpolation(x,y)

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updated 1 year ago

xy2sn by Juernjakob Dugge

Transform cartesian to curvilinear orthogonal coordinates, e.g. a flow-oriented coordinate system. (coordinate transforma..., earth science, interpolation)

sn2xy( s, n, centerlinex, centerliney, varargin )

xy2sn( x, y, centerlinex, centerliney, varargin )

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updated 1 year ago

gapolyfitn by Richard Crozier

optimises the functional form of a multi-dimensional polynomial fit to model data (optimization, linear regression, modelling)

GenerateNewTerm(vars, maxPower, poly, maxLoops)

HasTerm(p1, p2, newTerm, vars)

PolyFitScore(polyVec, polyStruct)

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