John D'Errico
Retired
Followers: 2
Adam Danz
chakwai
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.
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Top ten contributors whose answers received the most acceptances in 2023
Awarded to John D'Errico on 01 Jan 2024
1 of your answers has been picked for excellence by MATLAB Answers Editors
Awarded to John D'Errico on 17 Mar 2023
Obtain 50 solvers for a problem you have created
Awarded to John D'Errico on 10 Sep 2020
Like a problem or solution
Awarded to John D'Errico on 13 Oct 2016
Top ten contributors with the most downloaded submissions in 2023
Awarded to John D'Errico on 19 Jan 2024
Top ten contributors with the most downloaded submissions in 2022
Awarded to John D'Errico on 03 Jan 2023
Top ten contributors with the most downloaded submissions in 2021
Awarded to John D'Errico on 06 Jan 2022
Top ten contributors with the most downloaded submissions in 2020
Awarded to John D'Errico on 04 Jan 2021
Answer 50 questions that were unanswered for more than 30 days
Awarded to John D'Errico on 15 Nov 2020
Top ten contributors with the most downloaded submissions in 2019
Awarded to John D'Errico on 02 Jan 2020
Your submissions were downloaded 1000 or more times in a month
Awarded to John D'Errico on 01 Nov 2019
Your submission is selected as "Pick of The Week"
Awarded to John D'Errico on 09 Oct 2019
Feeds
Inviato
randpoly
Generate N uniformly distributed points inside a supplied polygon (or polyshape)
circa un anno fa | 2 download |
Inviato
allcrossings
Locate all intersections of a pair of functions f1 and f2, on a finite domain
circa un anno fa | 1 download |
Inviato
num2bin
Expression of all numbers in a variety of binary forms.
oltre un anno fa | 1 download |
Inviato
A limited set of basic number theoretic tools
Various tools for working with integers and their factors, primes, congruences, etc.
oltre un anno fa | 1 download |
Inviato
minkowskiSum
Compute the Minkowski sum of any two polygons or polyshapes, convex or concave.
oltre un anno fa | 10 download |
Inviato
randFixedLinearCombination
Uniform random samples over a n-dimensional hyper-rectangle, subject to a linear equality constraint
oltre 3 anni fa | 2 download |
Inviato
Eigenshuffle
Consistently sorted eigenvalue and eigenvector sequences
quasi 4 anni fa | 22 download |
Inviato
Divisors of a number, perfect, amicable, and sociable number
Tools to work (and play) with the divisors of a number
circa 5 anni fa | 1 download |
Inviato
HPF - a big decimal class
High precision floating point arithmetic, a new class written in MATLAB
circa 6 anni fa | 37 download |
Inviato
The permanent of any matrix (square or not)
The permanent of any matrix, square or not
quasi 7 anni fa | 1 download |
Inviato
SLM - Shape Language Modeling
Least squares spline modeling using shape primitives
circa 7 anni fa | 63 download |
Inviato
The Fibonacci Sequence
Efficient computation of Fibonacci and Lucas numbers
circa 7 anni fa | 2 download |
Inviato
base2base(Nstart,bstart,bend)
Numeric base conversion between any two numeric bases, for any size integer.
oltre 7 anni fa | 3 download |
Inviato
Optimization Tips and Tricks
Tips and tricks for use of the optimization toolbox, linear and nonlinear regression.
circa 8 anni fa | 20 download |
Inviato
movingstd & movingstd2
A (fast) windowed std on a time series (or array)
circa 8 anni fa | 5 download |
Inviato
Surface Fitting using gridfit
Model 2-d surfaces from scattered data
circa 8 anni fa | 83 download |
Inviato
Batched partitioned nonlinear least squares
Speed up when you have a very large number of nonlinear least squares problems, but with one model
circa 9 anni fa | 3 download |
Inviato
export_search_path
Allows the user to transfer your search path from an old MATLAB release to a new release
circa 9 anni fa | 3 download |
Inviato
Adaptive numerical limit (and residue) estimation
Numerical extrapolation of a limit (with an error estimate) from only function values
circa 9 anni fa | 6 download |
Inviato
Variable Precision Integer Arithmetic
Arithmetic with integers of fully arbitrary size. Arrays and vectors of vpi numbers are supported.
circa 9 anni fa | 43 download |
Inviato
Symbolic Polynomial Manipulation
Symbolic polynomial manipulation as an exercise in OOP
oltre 9 anni fa | 32 download |
Inviato
Adaptive Robust Numerical Differentiation
Numerical derivative of an analytically supplied function, also gradient, Jacobian & Hessian
oltre 9 anni fa | 64 download |
Inviato
A suite of minimal bounding objects
Suite of tools to compute minimal bounding circles, rectangles, triangles, spheres, incircles, etc.
quasi 10 anni fa | 47 download |
Inviato
distance2curve
Find the closest point on a (n-dimensional) curve to any given point or set of points
circa 11 anni fa | 21 download |
Inviato
Inverse (integrated) gradient
Vectorized & fully sparse 1-d, 2-d, & 3-d integrated gradients
oltre 11 anni fa | 10 download |
Inviato
Inhull
Efficient test for points inside a convex hull in n dimensions
oltre 11 anni fa | 26 download |
Inviato
interparc
Distance based interpolation along a general curve in space
oltre 11 anni fa | 61 download |
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