John D'Errico

Retired

Last seen: Today | 自 2006 起处于活动状态

Followers: 36 Following: 0

消息

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.

统计学

All

查看徽章

Feeds

已提交

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

1 day 前 | 8 次下载 |

4.9 / 5

已提交

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

3 years 前 | 1 次下载 |

0.0 / 5

已提交

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

3 years 前 | 1 次下载 |

0.0 / 5

已提交

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

3 years 前 | 1 次下载 |

0.0 / 5

已提交

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

3 years 前 | 2 次下载 |

5.0 / 5

已提交

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

3 years 前 | 4 次下载 |

0.0 / 5

已提交

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

5 years 前 | 2 次下载 |

4.5 / 5

已提交

Eigenshuffle
Consistently sorted eigenvalue and eigenvector sequences

5 years 前 | 12 次下载 |

4.8 / 5

已提交

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

7 years 前 | 1 次下载 |

5.0 / 5

已提交

Partitions of an integer
List all partitions of an integer

8 years 前 | 8 次下载 |

4.9 / 5

已提交

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

8 years 前 | 1 次下载 |

0.0 / 5

已提交

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

8 years 前 | 34 次下载 |

5.0 / 5

已提交

The Fibonacci Sequence
Efficient computation of Fibonacci and Lucas numbers

9 years 前 | 1 次下载 |

5.0 / 5

已提交

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

9 years 前 | 1 次下载 |

5.0 / 5

已提交

polyfitn
Polynomial modeling in 1 or n dimensions

9 years 前 | 92 次下载 |

4.9 / 5

已提交

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

9 years 前 | 4 次下载 |

4.8 / 5

已提交

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

9 years 前 | 1 次下载 |

4.8 / 5

已提交

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

10 years 前 | 45 次下载 |

4.9 / 5

已提交

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

10 years 前 | 1 次下载 |

5.0 / 5

已提交

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

10 years 前 | 1 次下载 |

5.0 / 5

已提交

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

10 years 前 | 1 次下载 |

5.0 / 5

已提交

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

11 years 前 | 16 次下载 |

4.9 / 5

已提交

Symbolic Polynomial Manipulation
Symbolic polynomial manipulation as an exercise in OOP

11 years 前 | 13 次下载 |

4.9 / 5

已提交

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

11 years 前 | 28 次下载 |

4.8 / 5

已提交

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

11 years 前 | 23 次下载 |

4.8 / 5

已提交

nearestSPD
Finding the nearest positive definite matrix

12 years 前 | 18 次下载 |

4.9 / 5

已提交

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

13 years 前 | 8 次下载 |

5.0 / 5

已提交

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

13 years 前 | 4 次下载 |

4.8 / 5

已提交

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

13 years 前 | 18 次下载 |

4.7 / 5

已提交

interparc
Distance based interpolation along a general curve in space

13 years 前 | 15 次下载 |

5.0 / 5

加载更多