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updated 1 month ago

Symbolic Derivatives for Econometric Tests by Alan Weiss

How to calculate derivatives required by Econometric Toolbox tests via Symbolic Math Toolbox (symbolic, econometrics, jacobian)


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updated 1 month ago

Wavelet based Image Reconstruction from Gradient Data by E

A toolbox for reconstructing images from gradient data. (image processing, gradient, poisson solver)




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updated 3 months ago

Color Palette Tables (.cpt) for Matlab by Kelly Kearney

Create and apply GMT-style colormaps in Matlab (color palette table, colormap, gradient)


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updated 5 months ago

Add a background gradient to plots by Michelle Hirsch

Add a background gradient to plot axes to make them look a little fancy. (graphics, utility, gradient)

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updated 9 months ago

MeasureClick - measure between two clicks quickly by Matthew Arthington

Quickly display the distance and gradient between two clicks (plot, figure, dialogue box)


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updated 11 months ago

circular diff by Petorr

diff with wrap-around differences, same sized output matrix (diff, circular, difference)


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updated 12 months ago

FUNC2MAT: Convert linear function to matrix by Matt J

A utility to obtain the matrix representing a given linear function (linear function, matrix form, gradient)


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updated 1 year ago

diffe by Marco Borges

euclidian differentiation (diff, differential equation..., gradient)


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updated 1 year ago

Computing Electric field of a double dipole by solving Poisson's Equation by Praveen Ranganath

This code computes the E-fields due to 2-dipoles in a 2-D plane using Finite difference method. (aerospace, cartesian coordinates, dipole)


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updated 1 year ago

TRIGRADIENT.M by Mick Warehime

Fast approximation to the gradient for scattered data and for data defined by a triangulation. (triangulation, gradient, delaunay)


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updated almost 2 years ago

Inverse (integrated) gradient by John D'Errico

Vectorized & fully sparse 1-d, 2-d, & 3-d integrated gradients (integration, cumulative, gradient)




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updated 2 years ago

Files for the 2012 Webinar "Tips and Tricks - Getting Started Using Optimization with MATLAB" by Seth DeLand

These are the files that were used for the demonstrations in the webinar. (optimization, global optimization, fmincon)




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updated 2 years ago

Conditionally Colored Plot (CCPLOT) by Michael Heidingsfeld

Plots conditionally colored (2D line) graphs. (plot, visualization, color)


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updated 3 years ago

Adaptive Robust Numerical Differentiation by John D'Errico

Numerical derivative of an analytically supplied function, also gradient, Jacobian & Hessian (adaptive, differentiation, automatic)




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updated almost 4 years ago

DGradient by Jan Simon

Gradient of arrays as fast C-Mex (derivative, gradient, array)

DGradient(X, Dim, Spacing, Method)


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updated 4 years ago

Detect circles with various radii in grayscale image via Hough Transform by Tao Peng

Detect circular shapes in a grayscale image. Resolve their center positions and radii. (image analysis, circular hough transf..., various)

CircularHough_Grd(img, radrange, varargin)

DrawCircle(x, y, r, nseg, S)

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updated 4 years ago

diffxy by Darren Rowland

Second-order accurate numerical differentiation (N-dimensional) (derivative, differentiation, gradient)



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updated 4 years ago

Gradient from Neural Network by Alan Jennings

Function that takes a NN and creates a new NN that gives the gradient. (neural networks, function, gradient)



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updated 4 years ago

Derivative-based Optimization by Nassim Khaled

Derivative-based Optimization using The Gradient Descent (gradient, descent, minimum)



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updated 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)


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updated 5 years ago

nanderivative.m v2.1 (Jul 2009) by Carlos Adrian Vargas Aguilera

N-order derivative of vector data by interpolating nearby points, ignoring NaNs. (approximation, interpolation, diff)


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updated 5 years ago

convexchecker by Bapi Chatterjee

It checks real valued multidimensional function, whether it is convex. (optimization, finance, convex)


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updated 6 years ago

gradient8 by Wolfgang Schwanghart

8-connected neighborhood gradient and aspect of a digital elevation model (gradient, aspect, exposition)


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updated 12 years ago

Iterative Methods for Linear and Nonlinear Equations by C.T. Kelley

Companion Software (mathematics, iterative methods, linear)




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updated 13 years ago

central_diff.m by Robert Canfield

Calculates a numeric gradient using second-order central difference formula (approximation, interpolation, central)

central_diff( F, x )


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updated 14 years ago

cpcg.m by Leevan Ling

CPCG -CIRCULANT PRECONDITIONED CONJUGATE GRADIENT METHOD. (linear algebra, circulant, preconditioned)

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