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updated almost 4 years ago

Bisection by Wolfgang Putschögl

Computes the root of a function f by bisectioning. (approximation, solve, mathematics)

bisection(f,a,b,delta)

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updated 4 years ago

Line Simplification by Wolfgang Schwanghart

Recursive Douglas-Peucker Polyline Simplification (Iterative Endpoint Fit) (approximation, interpolation, polyline)

dpsimplify(p,tol)

dpsimplify(p,tol)

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updated 6 years ago

Real-Valued Spherical Harmonics by Bing Jian

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

SHRotate(r, degree)

angular_correlation(coeff_u,coeff_v)

compute_GA(coeffs)

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updated 6 years 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 7 years ago

Newton-Raphson by Keerthi venkateswara Rao

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

coeff_derivative=derivate(coeff_function)

coeff_second=syn_division(coeff_function,fun_root_new)

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

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updated 7 years ago

Lagrange Interpolator Polynomial by Dan Ellis

Find the polynomial (defined by its coefficients) passing through a set of points. (approximation, interpolation, lagrange interpolator...)

Lagrange Interpolation Polynomial

lagrangepoly(X,Y,XX)

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updated almost 9 years ago

Interpolation by Sokthai Chan

Tschebyscheff interpolation. (approximation, interpolation, sokthai chan)

interpolation.m

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updated 9 years ago

inpolygons by Kelly Kearney

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

inpolygons(x,y,xv,yv)

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updated 9 years ago

Fast retrieve line coordinates by Alejandro Sanchez-Crespo

Fast retrieve the (x,y) coordinates of a line, given the starting and ending points. (approximation, interpolation, 2d)

[x,y]=conect(Xstart,Xend,Ystart,Yend)

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updated 9 years ago

ortho_poly.m (Chebyshev polynomials) by Balajee Ananthasayanam

Evaluates chebyshev polynomials with vector arguments for vector arguments x. (approximation, interpolation, chebyshev)

pl=ortho_poly(kf,x,n)

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updated almost 10 years ago

polyfic by Vassili Pastushenko

Vectorized fit of vectors to columns of a matrix. (approximation, interpolation, polynomial)

polyfic(x,y,ORD)

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updated 10 years ago

LegendreShiftPoly by Peter Roche

This program returns the coefficients of the shifted Legendre polynomial P_n, given n. (approximation, interpolation, shifted)

LegendreShiftPoly(n)

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updated 10 years ago

Entrop by Michael Boss

ENTROP implements a special version of the algorithm for entropy maximization. (approximation, interpolation, entropy)

[X,Exit]=entrop(U,A,b,t,maxiter,tol);

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updated 10 years ago

Circle fit by Izhak Bucher

Fit a circle to a set of measured x,y points. (approximation, interpolation, circle fit)

circfit(x,y)

try_circ_fit.m

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updated 11 years ago

fft_upsample by Ohad Gal

Upsamples a complex series to form time domain interpolation for a fixed spaced grid. (approximation, interpolation, complex)

fft_upsample( in_m,upsample_factor )

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updated almost 13 years ago

smoothn by Anil Gannepalli

Smooths N-D input data using 'box' or 'gaussian' filter using a specified convolution kernel. (approximation, interpolation, smooth)

smoothn(X,sz,filt,std)

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updated almost 13 years ago

Lagrange polynomial interpolation by Carlo Castoldi

Lagrange polynomial interpolation (approximation, interpolation, lagrange)

y=lagrange(x,pointx,pointy)

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updated 15 years ago

polyfit2 by David Moline

Performs polynomial fits that pass through a specified point (x0,y0). (approximation, interpolation, tools)

polyfit2(x,y,n,x0,y0)

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