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updated 2 hours ago

Chebfun - current version by Chebfun Team

Numerical computation with functions (approximation, interpolation, quadrature)

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updated 7 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 8 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 12 days ago

first derivative approximation by Sean Scro

creates a first derivative approximation of a given function. also use function func_scrosd.m (matlab, algorithm, approximation)

deriv_scrosd.m

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updated 13 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 13 days ago

cdiff by Andrew Horchler

First- and second-order complex step derivative approximation (function, mathematics, approximation)

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updated 25 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 26 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 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

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 2 months 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 3 months ago

Best fit 3D circle to a set of points by Sam Murthy

Best fit 3D circle to a set of points (linear algebra, approximation)

CircFit3D(circLocs)

RodriguesRotation(providedPts, origNormal, newNormal)

circFit(x,y)

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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 3 months ago

ppfit(varargin) by Karl Skretting

Fit a piecewise polynomal, i.e. ppform, to points (x,y) using fixed breaks (polynomial, approximation)

ppfit(varargin)

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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

EEM Dynamical by Lucas Gasparino

Crude program for solving a dynamical system with non-linear spring characteristics. (mathematics, example, physics)

EEM_Dynamical.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

WaveBox by Dan Martinec

A set of functions for numerical simulations of travelling waves in a multi-agent system. (simulation, multiagent, irrational)

approximate_AWTF(ol_tf_front, ol_tf_rear, option_out, tim)

approximate_BGTF(ol_tf, N, option_out, tim)

approximate_BTF(ol_tf_front, ol_tf_rear, option_BTF, opti...

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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

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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updated 7 months ago

approxeq(x, y, tolerance) by Carl Witthoft

Test for 'nearly equal' (equality, approximation, precision)

approxeq(x, y, tolerance)

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updated 7 months ago

Bisection Method Root Finding by Sky Sartorius

Sky Sartorius (view profile)

Very simple to use and robust method that takes array inputs, so it even has advantages over fzero. (bisection, search, root)

bisection(f,lb,ub,target,options)

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updated 7 months ago

Fast Reducing of Sample Points for 1D Linear Interpolation by Daniel Herber

Daniel Herber (view profile)

For a specified absolute error tolerance, reduce a 1D data set for use with linear interpolation (algorithm, approximation, breakpoints)

EXAMPLES_reduce_interp_1d_linear

hessiancsd_mod(fun,x)

jacobiancsd_mod(fun,x)

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updated 7 months ago

central_diff.m by Robert Canfield

Calculates numeric gradient using second-order difference formula for unevenly spaced data (approximation, interpolation, central)

central_diff( F, x )

central_diff_test.m

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updated 9 months ago

Orthogonal Matching Pursuit (OMP) by Dr. Sujit Kumar Sahoo

An exact implementation of Orthogonal Matching Pursuit (OMP) as described by the pioneer Y.C. Pati (signal processing, image processing, sparse)

GetSparseData(m,d,Ns,type)

OMPa(Phi,V,m,alpha,errorGoal)

OMPvar(Phi,V,m,alpha,errorGoal)

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updated 9 months ago

2D NMR spectra fitter by Ali Shaban

A set of functions that can be used for approximation of various 2D NMR spectra with 2D Gaussians. (signal processing, approximation, clustering)

Approximation(xx,yy,I,clusters,peaklist,initialWidth)

drawClusters( clusters )

findClusters( peaklist, dx, dy )

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updated 10 months ago

Efficient Approximation for Response-Time Tails in Fork-join Queues by Zhan Qiu

Efficient Approximation Method for Response-Time Tails in Fork-join Queues (analysis, approximation, distribution)

build_SA(services, service_h, C)

build_Service_h( service )

build_index(m,cr)

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updated 11 months ago

Novel Bat Algorithm (NBA) by Xian-Bing Meng

Xian-Bing Meng (view profile)

This is a metaheuristic algorithm: Novel Bat Algorithm (NBA), proposed by Xian-Bing (2015) (algorithm, optimization, random)

NBA.m

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updated 11 months ago

Bird Swarm Algorithm (BSA) by Xian-Bing Meng

Xian-Bing Meng (view profile)

This is a new bio-inspired algorithm: Bird Swarm Algorithm, proposed by Xian-Bing (2015) (algorithm, random, optimization)

BSA( FitFunc, M, pop, dim, FQ, c1, c2, a1, a2 )

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updated 11 months ago

fun(b,a) by manjeet kumar

optimal fractional delay infinite impulse response filter design using cuckoo search algorithm (signal processing, optimization, matlab)

fun(b,a)

FD_IIR_CSA_PSO_GA.m

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updated 12 months ago

Guaranteed Automatic Integration Library by GAIL

GAIL (view profile)

A suite of algorithms for integration problems whose answers are guaranteed to be correct. (monte carlo simulatio..., sobol, integration)

Functions

GAIL License

Guaranteed Automatic Integration Library (GAIL)

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updated 12 months ago

Best polynomial approximation in uniform norm by Andrew Knyazev

For a given function on an interval, the code calculates the min-max approximation by a polynomial. (mathematics, statistics, optimization)

polyfitinf(M,N,K,X,Y,EPSH,MAXIT,REF0)

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updated 1 year ago

Normal Approximation of Binomial Distribution with Continuity Correction by Joseph Santarcangelo

Normal Approximation of Binomial Distribution with Continuity Correction (statistics, approximation)

normbin(option)

NormApproxBinomial

main.m

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updated 1 year ago

Numerical Techniques for Volterra Equations by Hirak Doshi

Numerical Volterra Equation Solver (mathematics, approximation, matrices)

numsolve(a,b,n,h,f,ker )

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updated 1 year ago

Concrete Strength Approximator 2000 by Khashayar Khorasani

This function approximates the compressive strength of a concrete mix based upon density properties. (structural, concrete, construction)

ConcreteStrengthApproximator2000.m

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updated 1 year ago

powersmooth by Benjamin Friedrich

Smooth noisy time-series faithfully, without distorting lower-order time-derivatives (signal processing, data exploration, approximation)

powersmooth(vec,order,weight)

demo_powersmooth.m

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updated 1 year ago

SPLINEFIT by Jonas Lundgren

Jonas Lundgren (view profile)

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

SPLINEFIT EXAMPLES

ppdiff(pp,j)

ppint(pp,a,b)

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updated 1 year 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 1 year ago

mq_interpolation.m by Orlando Rodríguez

Multiquadrics interpolation. (approximation, interpolation, multiquadrics)

mq_interpolation(r,f,ri,c)

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updated 1 year 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 1 year 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 1 year 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 1 year 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 year ago

Support Vector Regression by Ronnie Clark

Ronnie Clark (view profile)

  • 1 file
  • 213 downloads
  • 3.66667

A MATLAB implementation of Support Vector Regression (SVR). (regression, nonlinear, machine learning)

svr_trainer(xdata,ydata, c, epsilon, kernel, varargin)

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