Community Profile

photo

John D'Errico


Retired

Last seen: Today Active since 2006

DON'T contact me. I won't answer questions. PERIOD. I don't do your homework. I won't do consulting. A retired mathematician, numerical analyst, woodworker, bridge player.

Statistics

All
  • Revival Level 4
  • Master
  • Quiz Master
  • Promoter
  • Top Downloads 2020
  • Top Downloads 2019
  • Personal Best Downloads Level 5
  • Editor's Pick
  • First Review
  • 5-Star Galaxy Level 5
  • First Submission
  • 36 Month Streak

View badges

Content Feed

Submitted


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

1 year ago | 2 downloads |

Submitted


Eigenshuffle
Consistently sorted eigenvalue and eigenvector sequences

1 year ago | 25 downloads |

Thumbnail

Submitted


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

3 years ago | 2 downloads |

Submitted


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

3 years ago | 15 downloads |

Submitted


Partitions of an integer
List all partitions of an integer

3 years ago | 21 downloads |

Submitted


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

4 years ago | 2 downloads |

Submitted


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

4 years ago | 108 downloads |

Thumbnail

Submitted


The Fibonacci Sequence
Efficient computation of Fibonacci and Lucas numbers

5 years ago | 5 downloads |

Submitted


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

5 years ago | 6 downloads |

Submitted


polyfitn
Polynomial modeling in 1 or n dimensions

5 years ago | 180 downloads |

Submitted


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

5 years ago | 17 downloads |

Submitted


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

5 years ago | 8 downloads |

Submitted


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

6 years ago | 89 downloads |

Thumbnail

Submitted


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

6 years ago | 1 download |

Submitted


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

6 years ago | 3 downloads |

Submitted


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

6 years ago | 4 downloads |

Submitted


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

7 years ago | 46 downloads |

Submitted


Symbolic Polynomial Manipulation
Symbolic polynomial manipulation as an exercise in OOP

7 years ago | 29 downloads |

Submitted


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

7 years ago | 71 downloads |

Submitted


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

7 years ago | 43 downloads |

Thumbnail

Submitted


nearestSPD
Finding the nearest positive definite matrix

8 years ago | 42 downloads |

Submitted


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

9 years ago | 23 downloads |

Thumbnail

Submitted


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

9 years ago | 13 downloads |

Submitted


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

9 years ago | 23 downloads |

Thumbnail

Submitted


interparc
Distance based interpolation along a general curve in space

9 years ago | 85 downloads |

Thumbnail

Submitted


IPDM: Inter-Point Distance Matrix
An efficient and accurate Inter-Point Distance Matrix

9 years ago | 8 downloads |

Thumbnail

Submitted


inpaint_nans
Interpolates (& extrapolates) NaN elements in a 2d array.

9 years ago | 141 downloads |

Thumbnail

Submitted


FresnelS and FresnelC
Efficient and accurate computation of the Fresnel sine and cosine integrals

9 years ago | 5 downloads |

Thumbnail

Submitted


fminsearchbnd, fminsearchcon
Bound constrained optimization using fminsearch

10 years ago | 198 downloads |

Submitted


arclength
Compute the arclength of a general curve in any number of dimensions

10 years ago | 40 downloads |

Thumbnail

Load more