John D'Errico

Last seen: ein Tag vor | Aktiv seit 2006

Followers: 41 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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HPF - a big decimal class
High precision floating point arithmetic, a new class written in MATLAB

4 Monate vor | 14 Downloads |

4.9 / 5

Gesendet

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

etwa 3 Jahre vor | 2 Downloads |

0.0 / 5

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

etwa 3 Jahre vor | 1 Download |

0.0 / 5

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

mehr als 3 Jahre vor | 1 Download |

0.0 / 5

Gesendet

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

mehr als 3 Jahre vor | 1 Download |

5.0 / 5

Gesendet

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

mehr als 3 Jahre vor | 2 Downloads |

0.0 / 5

Gesendet

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

mehr als 5 Jahre vor | 2 Downloads |

4.5 / 5

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Eigenshuffle
Consistently sorted eigenvalue and eigenvector sequences

fast 6 Jahre vor | 28 Downloads |

4.8 / 5

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

etwa 7 Jahre vor | 2 Downloads |

5.0 / 5

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Partitions of an integer
List all partitions of an integer

etwa 8 Jahre vor | 2 Downloads |

4.9 / 5

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

fast 9 Jahre vor | 1 Download |

0.0 / 5

Gesendet

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

etwa 9 Jahre vor | 35 Downloads |

5.0 / 5

Gesendet

The Fibonacci Sequence
Efficient computation of Fibonacci and Lucas numbers

etwa 9 Jahre vor | 2 Downloads |

5.0 / 5

Gesendet

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

mehr als 9 Jahre vor | 2 Downloads |

5.0 / 5

Gesendet

polyfitn
Polynomial modeling in 1 or n dimensions

fast 10 Jahre vor | 56 Downloads |

4.9 / 5

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

fast 10 Jahre vor | 6 Downloads |

4.8 / 5

Gesendet

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

etwa 10 Jahre vor | 2 Downloads |

4.8 / 5

Gesendet

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

etwa 10 Jahre vor | 33 Downloads |

4.9 / 5

Gesendet

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

fast 11 Jahre vor | 1 Download |

5.0 / 5

Gesendet

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

etwa 11 Jahre vor | 1 Download |

5.0 / 5

Gesendet

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

etwa 11 Jahre vor | 2 Downloads |

5.0 / 5

Gesendet

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

etwa 11 Jahre vor | 16 Downloads |

4.9 / 5

Gesendet

Symbolic Polynomial Manipulation
Symbolic polynomial manipulation as an exercise in OOP

mehr als 11 Jahre vor | 3 Downloads |

4.9 / 5

Gesendet

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

mehr als 11 Jahre vor | 22 Downloads |

4.8 / 5

Gesendet

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

fast 12 Jahre vor | 24 Downloads |

4.8 / 5

Gesendet

nearestSPD
Finding the nearest positive definite matrix

mehr als 12 Jahre vor | 11 Downloads |

4.9 / 5

Gesendet

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

etwa 13 Jahre vor | 13 Downloads |

5.0 / 5

Gesendet

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

mehr als 13 Jahre vor | 7 Downloads |

4.8 / 5

Gesendet

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

mehr als 13 Jahre vor | 14 Downloads |

4.7 / 5

Gesendet

interparc
Distance based interpolation along a general curve in space

mehr als 13 Jahre vor | 13 Downloads |

5.0 / 5

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