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updated 8 hours ago

Chebfun - current version by Chebfun Team

Numerical computation with functions (approximation, interpolation, quadrature)

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updated 5 days ago

Regular Control Point Interpolation Matrix with Boundary Conditions by Matt J

Matt J (view profile)

Creates Toeplitz-like matrices representing interpolation operations with edge conditions. (interpolation, spline, bspline)

Example1D

Example2D

interpMatrix(kernel, origin, numCtrlPoints, CtrlPointSep,...

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updated 6 days ago

EzyFit 2.43 by Frederic Moisy

Frederic Moisy (view profile)

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 6 days ago

polyfitn by John D'Errico

John D'Errico (view profile)

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

polyfitn_demo

polydern(p,diffvar)

polyfitn(indepvar,depvar,modelterms)

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updated 10 days ago

Bayesian Markov Stochastic Monte Carlo Valuation of Integrated Price Volume Action with Kelly Crit. by Richard Belshaw

A multipath simulation to evaluate the integrated price volume action value into the future (signal processing, mathematics, data import)

calculateconflevels( temperatures,np,steps )

calculatefuturevalues(dB,pdB,extenlst,TempData,phasedistp...

generateTemperatures( dB,s0,np,steps )

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updated 11 days ago

hermitePoly by Or Werner

The function returns Hermite interpolation polynomomial from given data. (interpolation, hermite, newton polynomial)

hermitePoly( ar2 )

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updated 11 days ago

Newton-Raphson by Keerthi venkateswara Rao

Newton-Raphson method for all real roots of the polynomial. (approximation, interpolation, iterative)

derivate.m

newton(coeff_function,initial_guess,error_tolerance,max_i...

syn_division(coeff_function,fun_root_new)

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updated 14 days ago

Splines by Enrico Bertolazzi

Mex interface to a C++ spline library (interpolation, surface, spline)

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updated 21 days ago

Loess filtering - C++ implementation by Bart Vermeulen

Performs a locally weighted robust regression on multidimensional scattered data (regression, multidimensional, multithreaded)

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updated 23 days ago

Real-Valued Spherical Harmonics by Bing Jian

Bing Jian (view profile)

some useful spherical harmonics routines (approximation, interpolation, spherical harmonics)

compute_Ylm.m

SHRotate(r, degree)

angular_correlation(coeff_u,coeff_v)

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updated 23 days ago

Thin plate splines by Bing Jian

Bing Jian (view profile)

Matlab funcions for performing landmark warping using thin plate splines (tps, splines, thinplatespline)

tps_compute_kernel(x,z)

tps_compute_param(PP,kernel,U,Pm,Q1,Q2,R,lambda,target)

tps_set_ctrl_pts(ctrl_pts)

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updated 25 days ago

ORTHPOLYFIT, ORTHPOLYVAL by Ingo Löhken

Direct transform of multivariate series to a polynomial domain by the Gaussian quadrature methods. (approximation, interpolation, orthogonal)

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updated 30 days ago

Lagrangian polynomial interpolation by Andrea La Spina

Lagrangian polynomial interpolation (lagrange, polynomial, interpolation)

Lagrangian_polynomial_interpolation.m

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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

curvspace by Yo Fukushima

Generate evenly spaced points along an existing curve in 2D or 3D. (approximation, interpolation, linspace)

curvspace(p,N)

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updated 1 month ago

Lagrange polynomial interpolation by Carlo Castoldi

Lagrange polynomial interpolation (approximation, interpolation, lagrange)

lagrange(x,pointx,pointy)

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updated 1 month ago

polyfit0.m by Arthur Jutan

Arthur Jutan (view profile)

Polyfit0 - similar to polyfit, except that the fitted polynomial does not have a constant term. (approximation, interpolation, polyfit)

polyfit0(x,y,n)

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updated 1 month ago

curvature to cartesian by NeuralDip

with this function you can convert a (curvature- curve length) relation to Cartesian coordinates. (interpolation, curv2cart, polynomial spirals)

curv2cart(a,b,c,d,e,l,p)

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updated 1 month ago

zerocrossing1 by David de Wolf

To find the x values where f(x) = 0 when f(x) is not available as an analytic function of x. (approximation, interpolation, zero crossings)

zerocrossing1.m

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updated 1 month ago

Superposition by Vigneshwar Kalyanasundaram

Calculates superposition of curves in a specified range (approximation, interpolation, superposition)

superposition(x, varargin)

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updated 1 month ago

inpolygons by Kelly Kearney

Kelly Kearney (view profile)

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

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updated 1 month ago

ADC by Eric Ogier

Eric Ogier (view profile)

Integrating Analog to Digital Converter - Simulink model (adc, iadc, analog)

ADC_stop.m

ADC_init.m

ADC.mdl

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updated 1 month ago

findintercept(Yin,varargin) by Ben Oeveren

Detects intercept at certain threshold with the input signal based on the given requirements. (signal processing, interpolation, intercept)

findintercept(Yin,varargin)

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updated 1 month ago

Temperature Pattern Prediction by Vishwajeet Pattanaik

Weather - Temperature Pattern Prediction and Anomaly Identification using Artificial Neural Network (neural networks, interpolation, weather prediction)

WeatherData(varargin)

WeatherData(varargin)

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updated 1 month ago

Missing samples interpolation through the FFT by Jesus Selva

Interpolates missing samples with arbitrary positions through the FFT. (fft, interpolation, nonuniform sampling)

DemoMissingSamples

InterpMissingSamples(sJ,J,N)

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updated 1 month ago

fitellipse.m by Richard Brown

Richard Brown (view profile)

Fit ellipses to 2D points using linear or nonlinear least squares (approximation, interpolation, least squares)

FITELLIPSE : Least squares ellipse fitting demonstration

ellipsedemo.mlx

fitellipse(x, varargin)

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updated 2 months ago

Surface Fitting using gridfit by John D'Errico

John D'Errico (view profile)

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

gridfit_demo.mlx

gridfit_demo

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

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updated 2 months ago

MatthewPeterKelly/Bezier_Curves by Matthew Kelly

A few Matlab functions for creating and evaluating bezier curves. (bezier, rational bezier, curve)

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updated 2 months ago

Lagrange Polynomial Coefficents by Marco

Marco (view profile)

Computation of the Coefficients of Lagrange Polynomial of order-n (polynomial, interpolation, lagrange polynomial)

poly_lagrange.m

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updated 3 months ago

Digital Signal Processing Survival Kit by Ilias Konsoulas

A concise but versatile Digital Signal Processing Toolbox (kit) ideal for DSP lab experiments. (signal processing, dsp, convolution)

conv_DHT(x,y)

decimator(x,h,K)

diffft(x)

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updated 3 months ago

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

Tristan Ursell (view profile)

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

pinky(Xin,Yin,dist_in,varargin)

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updated 3 months ago

lagrange(X,Y,Xa) by Last

Last (view profile)

1 dimension Lagrange interpolation (lagrange, interpolation)

lagrange(X,Y,Xa)

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updated 3 months ago

cubic Bezier least square fitting by Dr. Murtaza Khan

Approximation of data using cubic Bezier curve least square fitting (approximation, interpolation, cubic)

BezierInterpCPMatSegVec(p0mat,p1mat,p2mat,p3mat,NVec,vara...

ChordLengthNormND(p)

FindBezierControlPointsND(p,varargin)

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updated 4 months ago

interpolate3D by Gabriele Piantadosi

3D interpolation of volumes. (interpolation, 3d, tridimensional)

interpolate3D( vol, ratio, method )

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updated 4 months ago

scatteredInterpn by Johan Winges

Linear interpolation of n-dimensional scattered data (interpolation, interpn, delaunay)

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updated 5 months ago

pcinterp2d(x,y,f,xi,yi) by Orlando Rodríguez

Piecewise cubic interpolation 2D (interpolation, 2d, derivatives)

pcinterp2d(x,y,f,xi,yi)

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updated 5 months ago

pcinterp( x, y, xi ) by Orlando Rodríguez

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

pcinterp( x, y, xi )

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updated 5 months ago

MatthewPeterKelly/Chebyshev_Polynomials by Matthew Kelly

Tutorial for working with Chebyshev Orthogonal Polynomials (othogonal polynomials, chebyshev, interpolation)

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updated 5 months ago

ChebSmooth3(f,order) by Paulo Fonte

Approximate 3D function by truncated Chebyshev series. (mathematics, interpolation)

ChebSmooth3(f,order)

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updated 5 months ago

Sparse Grid Interpolation by Alexander

Sparse grid interpolation to overcome curse of dimensionality. (interpolation, sparse grid, curse of dimensionali...)

Smolyak_eval(str_input)

Smolyak_fit(obj,varargin)

ind2subq(siz,step)

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updated 5 months ago

piecewise cubic spline interpolation by Alexander

Obtains a piecewise cubic spline from a function, and a function to obtain derivatives is included. (interpolation, interp1, spline)

pwcs_coefficients(val,mod)

pwcs_deriv(x,order,struc)

pwcs_eval(x,grid,m,para,ran)

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updated 5 months ago

Newton Rapshom aplicado a un problema by Miguel Ayala

Newton Rhapson (interpolation, newtonraphson)

Ejercicio1.m

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updated 5 months ago

Independent Doubly Adaptive Rejection Metropolis Sampling by lukafree

lukafree (view profile)

IA2RMS is an adaptive MCMC algorithm, for drawing samples from univariate target distributions. (mcmc, monte carlo, gibbs sampling)

IA2RMS(f,S,M,type)

Sample_Eval_Proposal(f,m,b,S,type,w)

build_proposal(f,S,t,type)

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updated 5 months ago

Profile of Pim Conradi's Toroid with curve fitting by Kieran

Curve fit from profile image pixel coordinates. (geometry, interpolation)

Pixel_coordinates_of_the_inside_vortex.m

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updated 6 months ago

interpolation(xup,xdown,x,fup,fdown) by emmanouil nanos

Function for linear interpolation (interpolation)

interpolation(xup,xdown,x,fup,fdown)

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updated 6 months ago

grid2tri - Gridded Surface to Irregular Triangulation by Patrik Forssén

Creates an irregular triangulation of a gridded surface, possibly with undefined areas (triangulation, interpolation, meshgrid)

trival.m

grid2tri.m

trioptions.m

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updated 6 months ago

Caputo-type advection-diffusion equations by Changpin LI

This function is a High-order numerical scheme for the advection-diffusion equation. (approximation, matlab, interpolation)

adn.m

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updated 6 months ago

High-order approximation to Caputo derivatives by Changpin LI

This function is a high-order numerical approximations to alpha-th order Caputo derivatives of f(t). (interpolation, matlab, approximation)

CaputoD.m

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updated 6 months ago

SplineCubicCoef( vector, h ) by Enio

Enio (view profile)

Spline Cubic Interpolation of a row/column of a matrix (polynomial, interpolation, image processing)

SplineCubicCoef( vector, h )

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updated 6 months ago

Chebfun V4 - old version; please download current version instead by Chebfun Team

Numerical computation with functions (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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