Kenneth Johnson
KJ Innovation
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Accept 2 answers given by other contributors
Awarded to Kenneth Johnson on 15 Feb 2022
Accept 1 answer given by other contributors
Awarded to Kenneth Johnson on 31 Mar 2021
Publish your first review
Awarded to Kenneth Johnson on 20 May 2020
Your submissions were downloaded 10 or more times in a month
Awarded to Kenneth Johnson on 01 Nov 2019
Your submissions received 5 five star ratings
Awarded to Kenneth Johnson on 09 Oct 2019
Publish your first submission
Awarded to Kenneth Johnson on 09 Oct 2019
Feeds
Submitted
Class DAA, "Derivative-Augmented Array"
Class DAA, "Derivative-Augmented Array", is a general-purpose automatic differentiation engine implemented in MATLAB.
nästan 2 år ago | 1 download |
Submitted
Padé coefficients
Calculate Padé coefficients corresponding to a truncated Taylor series.
ungefär 2 år ago | 2 downloads |
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...
mer än 2 år ago | 0
| accepted
Question
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...
mer än 2 år ago | 2 answers | 1
2
answersQuestion
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...
mer än 2 år ago | 1 answer | 3
1
answerSubmitted
Generalized matrix operators
The functions mtimes_.m, mldivide_.m, and mrdivide_.m generalize the corresponding MATLAB functions.
mer än 2 år ago | 1 download |
Question
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...
mer än 2 år ago | 2 answers | 1
2
answersQuestion
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...
mer än 2 år ago | 3 answers | 11
3
answersSubmitted
Linear differential equation solver (lde.m)
solves a linear, first-order, vector differential equation
ungefär 3 år ago | 1 download |
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...
mer än 3 år ago | 1 answer | 3
1
answerSubmitted
permn
Generate permutations of 1:n and permutation parity.
mer än 3 år ago | 2 downloads |
Submitted
str2subs, subs2str
Convert a string to/from a subscript struct for use in subsref and subsasgn.
mer än 3 år ago | 1 download |
Submitted
roots_
roots_(c) does not return zero when c(end) is nonzero.
mer än 3 år ago | 3 downloads |
Submitted
fminsearch_(funfcn,x0,options,varargin)
Works around a bug (or design defect) in fminsearch.
ungefär 8 år ago | 1 download |
Submitted
Generalized Matrix Exponential
Solves Y'(t) = D(t)*Y(t) for Y(1) with Y(0) = I (identity matrix).
ungefär 9 år ago | 1 download |
Submitted
Scalar
The Scalar base class disallows non-scalar instantiation.
mer än 9 år ago | 1 download |
Submitted
Matrix exponential
Matrix exponential algorithm with improved numerical precision
mer än 10 år ago | 2 downloads |
Submitted
Matrix polynomial
Efficiently evaluate a polynomial with square-matrix argument and scalar coefficients.
mer än 10 år ago | 1 download |
Submitted
elementwise power
more efficient than MATLAB's power function
mer än 10 år 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
nästan 12 år ago | 2 downloads |
Submitted
Complex Erf (Error Function), Fresnel Integrals
complex erf function
mer än 12 år ago | 4 downloads |
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