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updated 12 hours ago

Chebfun - current version by Chebfun Team

Numerical computation with functions (approximation, interpolation, quadrature)

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updated 2 days 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 4 days ago

Splines by Enrico Bertolazzi

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

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updated 7 days ago

MatLab Solutions: "Introduction to Digital Signal Processing: A Computer Laboratory Textbook". by Ilias Konsoulas

These files are the MatLab solutions of exercises contained in the above DSP lab textbook. (dsp, digital signal proces..., discrete fourier tran...)

AD_DA(x,Xmin,Xmax,Levels)

conv_DHT(x,y)

conv_DHT2(x,h)

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updated 13 days 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 14 days 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 16 days 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 18 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 29 days ago

interpolate3D by Gabriele Piantadosi

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

interpolate3D( vol, ratio, method )

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updated 30 days ago

scatteredInterpn by Johan Winges

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

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updated 1 month 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 1 month 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 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

MatthewPeterKelly/Chebyshev_Polynomials by Matthew Kelly

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

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updated 2 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 2 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 2 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 2 months ago

Newton Rapshom aplicado a un problema by Miguel Ayala

Newton Rhapson (interpolation)

Ejercicio1.m

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updated 3 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 3 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 3 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 3 months 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)

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

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updated 3 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 3 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 3 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 3 months ago

SplineCubicCoef( vector, h ) by Enio

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

SplineCubicCoef( vector, h )

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updated 4 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 4 months ago

Estimating Option-Implied Probability Distributions for Asset Pricing by Ken Deeley

Ken Deeley (view profile)

Create fan charts for future asset prices based on sparse call/put price market data (mathematics, statistics, finance)

OptImpRatesArticle.m

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updated 4 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 4 months 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 4 months ago

Gradient-Enhanced Sparse Grid by Jouke de Baar

Gradient-enhanced sparse grid interpolation (interpolation)

chtensorgr(N,xi,x,y,gy,options)

defaultopts(options)

fullgrid(N)

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updated 4 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 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

slinspace by Michael Yoshpe

Michael Yoshpe (view profile)

Insert equally spaced points on great circles defined by vertices of a spherical polyline (geometry, 3d, interpolation)

test_slinspace.m

slinspace(latv, longv, varargin)

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updated 6 months ago

jdugge/xy2sn by Juernjakob Dugge

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

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updated 6 months ago

Bezier Curves by Adrian

Adrian (view profile)

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

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updated 6 months ago

Cubic Splines Made Easy by Chris McComb

Fits a set of cubic splines to given data, and returns an inline function. (cubic splines, curvefitting, interpolation)

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updated 6 months ago

inpolygons by Kelly Kearney

Kelly Kearney (view profile)

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

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updated 6 months ago

areaplot(x,y,threshold) by Ben Oeveren

Filled area plot with based on intersept with threshold (intercept, interpolation)

areaplot(x,y,threshold)

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updated 8 months ago

delaunay_surf by Will Robertson

Surf plot scattered data with interpolation (surface, plot, interpolation)

delaunay_surf(x,y,z,varargin)

delaunay_surf_example.m

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updated 9 months ago

Smolyak Anisotropic Grid by Rafa Valero

To solve problems whith high dimensionality (high dimensionality, smolyak, anisotropy)

Accuracy_Test_Smolyak.m

GH_Quadrature.m

Smolyak_Polynomial.m

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updated 9 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 9 months 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 months ago

subtri(F,V,n,uniqueOpt) by Kevin Moerman

Kevin Moerman (view profile)

Sub-triangulates patch format data. Can be used to increase the density of triangulated data (triangulation, signal processing, data exploration)

subtri(F,V,n,uniqueOpt)

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updated 10 months ago

Quadratic Spline Interpolation by Ahmed Mekkawy

This MATLAB Code provides quadratic spline interpolation for a set of data points. (interpolation)

Quadratic_Interpolation.m

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updated 12 months ago

Image Interpolation by Sunil Jaiswal

Implementation of image Interpolation (http://ihome.ust.hk/~spjaiswal/image_interpolation.html) (interpolation, image processing, super resoultion)

nedi_demo(x1)

proposed_algorithm(y1,y2,sun_spia_spia,org_sai_small,or_i...

sri(x,level)

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updated 1 year ago

CUBIC INTERPOLATION METHOD by Sleeba Paul

A non linear optimization using the Cubic Interpolation Method (nonlinear, cubic, interpolation)

cubic.m

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updated 1 year ago

QUADRATIC INTERPOLATION METHOD by Sleeba Paul

Quadratic Interpolation Method with single variable function. (quadratic, interpolation, ssrao)

quadractic_interpolation.m

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updated 1 year ago

iplot(ref,coox,cooy,obx,oby,nc,bw) by Yiwei

Yiwei (view profile)

Plot lines with an inverse grayscale over the background gray-scaled picture. (plot, inverse grayscale, interpolation)

iplot(ref,coox,cooy,obx,oby,nc,bw)

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updated 1 year 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)

ConstructPolyInterpolant2D(xs,ys,xd,yd,nPoly,nInterp)

ConstructPolyInterpolant3D(xs,ys,zs,xd,yd,zd,nPoly,nInterp)

StructuredGrid_3D_Test1.m

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