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Kenneth Johnson


KJ Innovation

Last seen: 4 Monate vor Aktiv seit 2011

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  • Thankful Level 2
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  • Personal Best Downloads Level 1
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Gesendet


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

6 Monate vor | 3 Downloads |

Gesendet


Padé coefficients
Calculate Padé coefficients corresponding to a truncated Taylor series.

7 Monate vor | 2 Downloads |

Gesendet


pageexpm
Paged matrix exponential function

11 Monate vor | 1 Download |

Beantwortet
Why does pagemldivide not give Singular Matrix warnings?
Summary of response from Technical Support: The 'help' for 'pagemldivide' states that the function never warns for ill-condit...

11 Monate vor | 0

| akzeptiert

Frage


Why does pagemldivide not give Singular Matrix warnings?
The new pagemldivide function in R2022a Prerelease (I think also in Parallel Computing Toolbox) doesn't give any Singular Matrix...

11 Monate vor | 2 Antworten | 1

2

Antworten

Frage


Why is subscripted assignment so inefficient?
Why is MATLAB's subscripted assignment so abysmally inefficient with more than 2 subscripts? e.g., >> clear, a = []; tic, for j...

12 Monate vor | 1 Antwort | 3

1

Antwort

Gesendet


Generalized matrix operators
The functions mtimes_.m, mldivide_.m, and mrdivide_.m generalize the corresponding MATLAB functions.

12 Monate vor | 1 Download |

Frage


MATLAB's inefficient copy-on-write implementation
MATLAB's copy-on-write memory management seems to have a serious defect, which I think is the reason behind the abysmal performa...

12 Monate vor | 2 Antworten | 1

2

Antworten

Gesendet


bsxi
Array indexing for binary singleton expansion

etwa ein Jahr vor | 1 Download |

Frage


In what way is the new R2021b Editor UI "improved"?
I find the "new and improved" Editor UI in R2021b to be extremely irritating, in no way better than R2021a. How did this get pas...

etwa ein Jahr vor | 0 Antworten | 11

0

Antworten

Gesendet


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

mehr als ein Jahr vor | 4 Downloads |

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Frage


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...

fast 2 Jahre vor | 1 Antwort | 3

1

Antwort

Gesendet


permn
Generate permutations of 1:n and permutation parity.

fast 2 Jahre vor | 3 Downloads |

Gesendet


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

etwa 2 Jahre vor | 1 Download |

Gesendet


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

etwa 2 Jahre vor | 3 Downloads |

Gesendet


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

mehr als 6 Jahre vor | 2 Downloads |

Gesendet


serpind.m
serpentine traversal of an N-dimensional array

fast 7 Jahre vor | 1 Download |

Gesendet


fgridmin.m
global minimization utility

fast 7 Jahre vor | 1 Download |

Gesendet


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

mehr als 7 Jahre vor | 1 Download |

Gesendet


Scalar
The Scalar base class disallows non-scalar instantiation.

fast 8 Jahre vor | 1 Download |

Gesendet


Matrix exponential
Matrix exponential algorithm with improved numerical precision

fast 9 Jahre vor | 1 Download |

Gesendet


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

fast 9 Jahre vor | 1 Download |

Gesendet


matrix power
more efficient than MATLAB's mpower function

etwa 9 Jahre vor | 1 Download |

Gesendet


elementwise power
more efficient than MATLAB's power function

etwa 9 Jahre vor | 1 Download |

Gesendet


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

mehr als 10 Jahre vor | 1 Download |

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Gesendet


Cornu Spline
two-point spline with slope constraints

etwa 11 Jahre vor | 1 Download |

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Gesendet


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

etwa 11 Jahre vor | 3 Downloads |

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