John D'Errico

Retired

Last seen: Today | Actif depuis 2006

Followers: 28 Following: 0

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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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Feeds

A soumis

randpoly
Generate N uniformly distributed points inside a supplied polygon (or polyshape)

environ 2 ans il y a | 4 téléchargements |

0.0 / 5

A soumis

allcrossings
Locate all intersections of a pair of functions f1 and f2, on a finite domain

environ 2 ans il y a | 1 téléchargement |

0.0 / 5

A soumis

num2bin
Expression of all numbers in a variety of binary forms.

environ 2 ans il y a | 1 téléchargement |

0.0 / 5

A soumis

A limited set of basic number theoretic tools
Various tools for working with integers and their factors, primes, congruences, etc.

environ 2 ans il y a | 2 téléchargements |

5.0 / 5

A soumis

minkowskiSum
Compute the Minkowski sum of any two polygons or polyshapes, convex or concave.

plus de 2 ans il y a | 4 téléchargements |

0.0 / 5

A soumis

randFixedLinearCombination
Uniform random samples over a n-dimensional hyper-rectangle, subject to a linear equality constraint

plus de 4 ans il y a | 2 téléchargements |

4.5 / 5

A soumis

Eigenshuffle
Consistently sorted eigenvalue and eigenvector sequences

presque 5 ans il y a | 44 téléchargements |

4.8 / 5

A soumis

Divisors of a number, perfect, amicable, and sociable number
Tools to work (and play) with the divisors of a number

environ 6 ans il y a | 1 téléchargement |

5.0 / 5

A soumis

HPF - a big decimal class
High precision floating point arithmetic, a new class written in MATLAB

presque 7 ans il y a | 36 téléchargements |

4.8 / 5

A soumis

Partitions of an integer
List all partitions of an integer

environ 7 ans il y a | 8 téléchargements |

4.9 / 5

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 |

0.0 / 5

A soumis

SLM - Shape Language Modeling
Least squares spline modeling using shape primitives

presque 8 ans il y a | 49 téléchargements |

5.0 / 5

A soumis

The Fibonacci Sequence
Efficient computation of Fibonacci and Lucas numbers

environ 8 ans il y a | 3 téléchargements |

5.0 / 5

A soumis

base2base(Nstart,bstart,bend)
Numeric base conversion between any two numeric bases, for any size integer.

plus de 8 ans il y a | 2 téléchargements |

5.0 / 5

A soumis

polyfitn
Polynomial modeling in 1 or n dimensions

presque 9 ans il y a | 252 téléchargements |

4.9 / 5

A soumis

Optimization Tips and Tricks
Tips and tricks for use of the optimization toolbox, linear and nonlinear regression.

presque 9 ans il y a | 10 téléchargements |

4.8 / 5

A soumis

movingstd & movingstd2
A (fast) windowed std on a time series (or array)

presque 9 ans il y a | 2 téléchargements |

4.8 / 5

A soumis

Surface Fitting using gridfit
Model 2-d surfaces from scattered data

environ 9 ans il y a | 65 téléchargements |

4.9 / 5

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

presque 10 ans il y a | 1 téléchargement |

5.0 / 5

A soumis

export_search_path
Allows the user to transfer your search path from an old MATLAB release to a new release

environ 10 ans il y a | 2 téléchargements |

5.0 / 5

A soumis

Adaptive numerical limit (and residue) estimation
Numerical extrapolation of a limit (with an error estimate) from only function values

environ 10 ans il y a | 1 téléchargement |

5.0 / 5

A soumis

Variable Precision Integer Arithmetic
Arithmetic with integers of fully arbitrary size. Arrays and vectors of vpi numbers are supported.

environ 10 ans il y a | 26 téléchargements |

4.9 / 5

A soumis

Symbolic Polynomial Manipulation
Symbolic polynomial manipulation as an exercise in OOP

plus de 10 ans il y a | 19 téléchargements |

4.9 / 5

A soumis

Adaptive Robust Numerical Differentiation
Numerical derivative of an analytically supplied function, also gradient, Jacobian & Hessian

plus de 10 ans il y a | 37 téléchargements |

4.8 / 5

A soumis

A suite of minimal bounding objects
Suite of tools to compute minimal bounding circles, rectangles, triangles, spheres, incircles, etc.

presque 11 ans il y a | 30 téléchargements |

4.8 / 5

A soumis

nearestSPD
Finding the nearest positive definite matrix

plus de 11 ans il y a | 22 téléchargements |

4.9 / 5

A soumis

distance2curve
Find the closest point on a (n-dimensional) curve to any given point or set of points

environ 12 ans il y a | 22 téléchargements |

5.0 / 5

A soumis

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

environ 12 ans il y a | 8 téléchargements |

4.8 / 5

A soumis

Inhull
Efficient test for points inside a convex hull in n dimensions

plus de 12 ans il y a | 29 téléchargements |

4.7 / 5

A soumis

interparc
Distance based interpolation along a general curve in space

plus de 12 ans il y a | 35 téléchargements |

5.0 / 5

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