image thumbnail

updated 6 months ago

Fractional differentiation and integration by George Papazafeiropoulos

The n-th order derivative or integral of a function is calculated through Fourier series expansion. (gauss, legendre, fractional)

Cubic polynomial differintegral

Identity function differintegral

Tabular function differintegral

image thumbnail

updated 1 year ago

N-Dimensional Trapezoidal integral by Mohammed Sadeq Al-Rawi

See title. (communications, biotech, image processing)

trapezoidal_rule_nd_integral(x, mat, N)

image thumbnail

updated 2 years ago

MATLAB based PID controller by Mohammad Saadeh

A very simple and effective way to build a PID controller in a single m.code (control design, simulation, pid controller)

PID_Controller.m

image thumbnail

updated almost 3 years ago

QUADGR by Jonas Lundgren

Gauss-Legendre quadrature with Richardson extrapolation. (quadrature, integral, approximation)

quadgr(fun,a,b,tol,trace,varargin)

image thumbnail

updated 4 years ago

Modulation tutorial by Ged Ridgway

Simple illustration of the Jacobian determinant as a geometric scaling factor (neuroimaging, morphometry, vbm)

Simple illustration of the Jacobian determinant as a geom...

image thumbnail

updated 4 years ago

Radial Basis Function Network by Travis Wiens

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

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

[W phi]=train_rbf(X,Y,Xc,k_i,basisfunction)

[Y_int Phi_int]=rbfn_integral(Xc,X1,X2,W,k_i,basisfunction)

image thumbnail

updated almost 5 years ago

der.m v1.0 (Nov, 2009) by Carlos Adrian Vargas Aguilera

Estimates first derivative of an array by using POLYFIT locally on each point ignoring NaNs! (diff, gradient, derivative)

der(X,DT,W,DEG,PAD,DIM)

image thumbnail

updated 6 years ago

erfi function by Per Sundqvist

Imaginary error function (could be complex) using matlab's incomplete gamma function gammainc (imaginary error funct..., complex, gaussian)

ans=erfi(x)

image thumbnail

updated 6 years ago

Fresnel integral by Bora Ung

Computes the Fresnel integral with complex argument "z" (fresnel, integral, argument)

FresnelI(z, tol)

image thumbnail

updated 7 years ago

rilt by Iari-Gabriel Marino

Regularized Inverse Laplace Transform (optimization, regularized, inverse)

rilt(t,y,s,g0,alpha,varargin)

image thumbnail

updated 7 years ago

fermi by mohankumar nandagopal

Evaluates the Ferm-Dirac integral needed in solid state physics. (chemistry, physics, fermidirac integral)

xx=fermi(aj,eta)

image thumbnail

updated 8 years ago

Quadrature rules for spherical volume integrals by Greg von Winckel

Computes weights and nodes for numerically solving spherical volume integrals. (integration, gauss, quadrature)

[r,t,p,w]=spherequad(nr,nt,np,rad)

image thumbnail

updated 9 years ago

Gauss-Chevyshev by Jordi Soler Penades

Integrates function using Gauss-Chevyshev method (integration, gausschevyshev integr..., function)

I=chevygauss(f,a,b,n)

p=chevypol(n)

y=fleg(f,a,b)

image thumbnail

updated 9 years ago

Montecarlo by Jordi Soler Penades

Integrates funcion using Monte-Carlo method (integration, integral, monte carlo)

I=montec(f,a,b,n)

I=montec2var(g,a,b,c,d,n)

I=montec2vvar(g,cx,dx,a,b,c,d,n)

image thumbnail

updated 10 years ago

Gauss-Legendre by Jordi Soler Penades

Numericaly evaluates integral using Gauss-Legendre quadrature method. (integration, integral, gauss)

I=gausslege(f,a,b,n)

polegende.m

y=flege(f,a,b)

Contact us