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John D'Errico


Retired

Last seen: Today Actif depuis 2006

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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A soumis


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

12 mois il y a | 1 téléchargement |

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

12 mois il y a | 1 téléchargement |

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

environ un an il y a | 3 téléchargements |

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

environ un an il y a | 2 téléchargements |

A soumis


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

environ un an 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

plus de 3 ans il y a | 2 téléchargements |

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Eigenshuffle
Consistently sorted eigenvalue and eigenvector sequences

plus de 3 ans il y a | 21 téléchargements |

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

environ 5 ans il y a | 1 téléchargement |

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

presque 6 ans il y a | 27 téléchargements |

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Partitions of an integer
List all partitions of an integer

presque 6 ans il y a | 10 téléchargements |

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The permanent of any matrix (square or not)
The permanent of any matrix, square or not

plus de 6 ans il y a | 1 téléchargement |

A soumis


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

presque 7 ans il y a | 62 téléchargements |

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The Fibonacci Sequence
Efficient computation of Fibonacci and Lucas numbers

environ 7 ans il y a | 1 téléchargement |

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

plus de 7 ans il y a | 13 téléchargements |

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polyfitn
Polynomial modeling in 1 or n dimensions

presque 8 ans il y a | 188 téléchargements |

A soumis


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

presque 8 ans il y a | 12 téléchargements |

A soumis


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

presque 8 ans il y a | 3 téléchargements |

A soumis


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

presque 8 ans il y a | 70 téléchargements |

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Batched partitioned nonlinear least squares
Speed up when you have a very large number of nonlinear least squares problems, but with one model

presque 9 ans il y a | 2 téléchargements |

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

presque 9 ans il y a | 3 téléchargements |

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

presque 9 ans il y a | 5 téléchargements |

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

environ 9 ans il y a | 42 téléchargements |

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Symbolic Polynomial Manipulation
Symbolic polynomial manipulation as an exercise in OOP

environ 9 ans il y a | 18 téléchargements |

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

environ 9 ans il y a | 53 téléchargements |

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

presque 10 ans il y a | 32 téléchargements |

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nearestSPD
Finding the nearest positive definite matrix

plus de 10 ans il y a | 27 téléchargements |

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

presque 11 ans il y a | 23 téléchargements |

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

environ 11 ans il y a | 12 téléchargements |

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

plus de 11 ans il y a | 42 téléchargements |

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interparc
Distance based interpolation along a general curve in space

plus de 11 ans il y a | 39 téléchargements |

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