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Kenneth Johnson


Last seen: 15 days ago

KJ Innovation

18 total contributions since 2011

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Submitted


Class DAA, "Derivative-Augmented Array"
Class DAA, "Derivative-Augmented Array", is a general-purpose automatic differentiation engine implemented in MATLAB.

14 days ago | 3 downloads |

Question


Is this a bug in eig?
This issue came up with the roots function (see roots_ on File Exchange), where eig was failing on the companion matrix. Follow...

24 days ago | 1 answer | 3

1

answer

Submitted


permn
Generate permutations of 1:n and permutation parity.

2 months ago | 2 downloads |

Submitted


str2subs, subs2str
Convert a string to/from a subscript struct for use in subsref and subsasgn.

4 months ago | 2 downloads |

Submitted


roots_
roots_(c) does not return zero when c(end) is nonzero.

4 months ago | 1 download |

Submitted


Linear differential equation solver (lde.m)
solves a linear, first-order, vector differential equation

4 years ago | 4 downloads |

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Submitted


fminsearch_(funfcn,x0,options,varargin)
Works around a bug (or design defect) in fminsearch.

5 years ago | 1 download |

Submitted


serpind.m
serpentine traversal of an N-dimensional array

5 years ago | 1 download |

Submitted


fgridmin.m
global minimization utility

5 years ago | 1 download |

Submitted


Generalized Matrix Exponential
Solves Y'(t) = D(t)*Y(t) for Y(1) with Y(0) = I (identity matrix).

6 years ago | 1 download |

Submitted


Scalar
The Scalar base class disallows non-scalar instantiation.

6 years ago | 1 download |

Submitted


Matrix exponential
Matrix exponential algorithm with improved numerical precision

7 years ago | 1 download |

Submitted


Matrix polynomial
Efficiently evaluate a polynomial with square-matrix argument and scalar coefficients.

7 years ago | 1 download |

Submitted


matrix power
more efficient than MATLAB's mpower function

7 years ago | 1 download |

Submitted


elementwise power
more efficient than MATLAB's power function

7 years ago | 1 download |

Submitted


Scanned-Spot-Array EUV Imaging for High-Volume Maskless Lithography
Design data and optical simulation code for maskless EUV lithography system

8 years ago | 2 downloads |

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Submitted


Cornu Spline
two-point spline with slope constraints

9 years ago | 1 download |

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Submitted


Complex Erf (Error Function), Fresnel Integrals
complex erf function

9 years ago | 4 downloads |

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