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.
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
제출됨
randpoly
Generate N uniformly distributed points inside a supplied polygon (or polyshape)
대략 1년 전 | 다운로드 수: 2 |
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allcrossings
Locate all intersections of a pair of functions f1 and f2, on a finite domain
대략 1년 전 | 다운로드 수: 1 |
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A limited set of basic number theoretic tools
Various tools for working with integers and their factors, primes, congruences, etc.
1년 초과 전 | 다운로드 수: 1 |
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minkowskiSum
Compute the Minkowski sum of any two polygons or polyshapes, convex or concave.
1년 초과 전 | 다운로드 수: 10 |
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randFixedLinearCombination
Uniform random samples over a n-dimensional hyper-rectangle, subject to a linear equality constraint
3년 초과 전 | 다운로드 수: 2 |
제출됨
Divisors of a number, perfect, amicable, and sociable number
Tools to work (and play) with the divisors of a number
대략 5년 전 | 다운로드 수: 1 |
제출됨
HPF - a big decimal class
High precision floating point arithmetic, a new class written in MATLAB
대략 6년 전 | 다운로드 수: 37 |
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The permanent of any matrix (square or not)
The permanent of any matrix, square or not
거의 7년 전 | 다운로드 수: 1 |
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SLM - Shape Language Modeling
Least squares spline modeling using shape primitives
대략 7년 전 | 다운로드 수: 63 |
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The Fibonacci Sequence
Efficient computation of Fibonacci and Lucas numbers
대략 7년 전 | 다운로드 수: 2 |
제출됨
base2base(Nstart,bstart,bend)
Numeric base conversion between any two numeric bases, for any size integer.
7년 초과 전 | 다운로드 수: 3 |
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Optimization Tips and Tricks
Tips and tricks for use of the optimization toolbox, linear and nonlinear regression.
거의 8년 전 | 다운로드 수: 20 |
제출됨
Batched partitioned nonlinear least squares
Speed up when you have a very large number of nonlinear least squares problems, but with one model
대략 9년 전 | 다운로드 수: 3 |
제출됨
export_search_path
Allows the user to transfer your search path from an old MATLAB release to a new release
대략 9년 전 | 다운로드 수: 3 |
제출됨
Adaptive numerical limit (and residue) estimation
Numerical extrapolation of a limit (with an error estimate) from only function values
대략 9년 전 | 다운로드 수: 6 |
제출됨
Variable Precision Integer Arithmetic
Arithmetic with integers of fully arbitrary size. Arrays and vectors of vpi numbers are supported.
대략 9년 전 | 다운로드 수: 43 |
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Symbolic Polynomial Manipulation
Symbolic polynomial manipulation as an exercise in OOP
9년 초과 전 | 다운로드 수: 32 |
제출됨
Adaptive Robust Numerical Differentiation
Numerical derivative of an analytically supplied function, also gradient, Jacobian & Hessian
9년 초과 전 | 다운로드 수: 64 |
제출됨
A suite of minimal bounding objects
Suite of tools to compute minimal bounding circles, rectangles, triangles, spheres, incircles, etc.
거의 10년 전 | 다운로드 수: 47 |
제출됨
distance2curve
Find the closest point on a (n-dimensional) curve to any given point or set of points
대략 11년 전 | 다운로드 수: 21 |
제출됨
Inverse (integrated) gradient
Vectorized & fully sparse 1-d, 2-d, & 3-d integrated gradients
11년 초과 전 | 다운로드 수: 10 |
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