John D'Errico
Retired
A retired applied mathematician, consultant, sometime mechanical engineer, numerical analyst, woodworker, bridge player. Please DON'T contact me, as too many students then decide I am their personal consultant if I allow it. I won't do consulting by mail.
Statistiques
62 Fichiers
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21 615
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15 Questions
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ACCEPTATION DE VOS RÉPONSES
46.67%
VOTES REÇUS
4 692
RANG
4 of 20 127
RÉPUTATION
65 420
CLASSEMENT MOYEN
4.80
CONTRIBUTIONS
62 Fichiers
TÉLÉCHARGEMENTS
991
ALL TIME TÉLÉCHARGEMENTS
589905
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0 Publications
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CLASSEMENT MOYEN
CONTRIBUTIONS
1 Point fort
NOMBRE MOYEN DE LIKES
8
Feeds
A soumis
randpoly
Generate N uniformly distributed points inside a supplied polygon (or polyshape)
plus d'un an il y a | 1 téléchargement |
A soumis
allcrossings
Locate all intersections of a pair of functions f1 and f2, on a finite domain
plus d'un an il y a | 1 téléchargement |
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num2bin
Expression of all numbers in a variety of binary forms.
presque 2 ans il y a | 2 téléchargements |
A soumis
A limited set of basic number theoretic tools
Various tools for working with integers and their factors, primes, congruences, etc.
presque 2 ans il y a | 3 téléchargements |
A soumis
minkowskiSum
Compute the Minkowski sum of any two polygons or polyshapes, convex or concave.
presque 2 ans il y a | 4 téléchargements |
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randFixedLinearCombination
Uniform random samples over a n-dimensional hyper-rectangle, subject to a linear equality constraint
environ 4 ans il y a | 3 téléchargements |
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Eigenshuffle
Consistently sorted eigenvalue and eigenvector sequences
plus de 4 ans il y a | 14 téléchargements |
A soumis
Divisors of a number, perfect, amicable, and sociable number
Tools to work (and play) with the divisors of a number
plus de 5 ans il y a | 1 téléchargement |
A soumis
HPF - a big decimal class
High precision floating point arithmetic, a new class written in MATLAB
plus de 6 ans il y a | 20 téléchargements |
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Partitions of an integer
List all partitions of an integer
plus de 6 ans il y a | 4 téléchargements |
A soumis
The permanent of any matrix (square or not)
The permanent of any matrix, square or not
plus de 7 ans il y a | 3 téléchargements |
A soumis
SLM - Shape Language Modeling
Least squares spline modeling using shape primitives
plus de 7 ans il y a | 67 téléchargements |
A soumis
The Fibonacci Sequence
Efficient computation of Fibonacci and Lucas numbers
plus de 7 ans il y a | 1 téléchargement |
A soumis
base2base(Nstart,bstart,bend)
Numeric base conversion between any two numeric bases, for any size integer.
environ 8 ans il y a | 2 téléchargements |
A soumis
polyfitn
Polynomial modeling in 1 or n dimensions
plus de 8 ans il y a | 178 téléchargements |
A soumis
Optimization Tips and Tricks
Tips and tricks for use of the optimization toolbox, linear and nonlinear regression.
plus de 8 ans il y a | 12 téléchargements |
A soumis
movingstd & movingstd2
A (fast) windowed std on a time series (or array)
plus de 8 ans il y a | 3 téléchargements |
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Surface Fitting using gridfit
Model 2-d surfaces from scattered data
plus de 8 ans il y a | 74 téléchargements |
A soumis
Batched partitioned nonlinear least squares
Speed up when you have a very large number of nonlinear least squares problems, but with one model
plus de 9 ans il y a | 2 téléchargements |
A soumis
export_search_path
Allows the user to transfer your search path from an old MATLAB release to a new release
plus de 9 ans il y a | 3 téléchargements |
A soumis
Adaptive numerical limit (and residue) estimation
Numerical extrapolation of a limit (with an error estimate) from only function values
plus de 9 ans il y a | 1 téléchargement |
A soumis
Variable Precision Integer Arithmetic
Arithmetic with integers of fully arbitrary size. Arrays and vectors of vpi numbers are supported.
plus de 9 ans il y a | 24 téléchargements |
A soumis
Symbolic Polynomial Manipulation
Symbolic polynomial manipulation as an exercise in OOP
presque 10 ans il y a | 26 téléchargements |
A soumis
Adaptive Robust Numerical Differentiation
Numerical derivative of an analytically supplied function, also gradient, Jacobian & Hessian
presque 10 ans il y a | 50 téléchargements |
A soumis
A suite of minimal bounding objects
Suite of tools to compute minimal bounding circles, rectangles, triangles, spheres, incircles, etc.
plus de 10 ans il y a | 24 téléchargements |
A soumis
nearestSPD
Finding the nearest positive definite matrix
environ 11 ans il y a | 27 téléchargements |
A soumis
distance2curve
Find the closest point on a (n-dimensional) curve to any given point or set of points
plus de 11 ans il y a | 17 téléchargements |
A soumis
Inverse (integrated) gradient
Vectorized & fully sparse 1-d, 2-d, & 3-d integrated gradients
presque 12 ans il y a | 5 téléchargements |
A soumis
Inhull
Efficient test for points inside a convex hull in n dimensions
environ 12 ans il y a | 27 téléchargements |
A soumis
interparc
Distance based interpolation along a general curve in space
environ 12 ans il y a | 28 téléchargements |