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updated 22 days ago

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

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

cptcmap(varargin)

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updated 3 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 6 months ago

MeasureClick - measure between two clicks quickly by Matthew Arthington

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

measureClick(varargin)

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updated 9 months ago

circular diff by Petorr

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

difc(varargin)

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updated 9 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)

A=func2mat(fun,Xtypical,varargin)

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updated 10 months ago

diffe by Marco Borges

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

diffe(x,range)

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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)

Poisson2d_dipole.m

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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)

trigradient(x,y,z,t,opt)

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updated 1 year ago

Inverse (integrated) gradient by John D'Errico

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

consolidator(x,y,aggregation_mode,tol)

intgrad1(fx,dx,f1,method)

intgrad2(fx,fy,dx,dy,f11)

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updated almost 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)

RunThermistorExample()

ThOptimPlotCircuit(options,state,flag,Tdata,VData,Res,ThV...

VEMap(x)

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updated 2 years ago

Conditionally Colored Plot (CCPLOT) by Michael Heidingsfeld

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

ccplot(x,y,c,map)

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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)

derivest_demo

multivariable_calc_demo

derivest(fun,x0,varargin)

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updated 3 years ago

DGradient by Jan Simon

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

DGradient(X, Dim, Spacing, Method)

uTest_DGradient(doSpeed)

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updated almost 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 almost 4 years ago

diffxy by Darren Rowland

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

demo_diffxy

diffxy(x,y,varargin)

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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)

NN_DerivativeValidate

NN_GradientFunction(net)

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updated 4 years ago

Derivative-based Optimization by Nassim Khaled

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

Gradient_Descent_maximum.m

Gradient_Descent_minimum.m

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updated 4 years 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)

symbolic_econometric_tests.m

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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)

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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)

nanderivative(Y,X,N,K,MET)

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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)

convexchecker.m

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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)

gradient8(DEM,res)

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updated almost 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 almost 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 )

central_diff_test.m

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updated 14 years ago

cpcg.m by Leevan Ling

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

cpcg(a, b, tol, max_it, c, x0)

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