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
Polynomial-to-Pade coefficient conversion
poly2pade converts polynomial coefficients to a Pade approximant's numerator and denominator coefficients.
5 månader ago | 3 downloads |
Submitted
roots_
roots_(c) works with poorly scaled polynomials and does not return zero when c(end) is nonzero.
6 månader ago | 1 download |
Submitted
Function pagetensorprod.m, paged tensor product
pagetensorprod generalizes tensorprod for paged operation (analogous to pagemtimes).
7 månader ago | 1 download |
Submitted
Class DAA, "Derivative-Augmented Array"
Class DAA, "Derivative-Augmented Array", is a general-purpose automatic differentiation engine implemented in MATLAB.
mer än 2 år ago | 1 download |
Submitted
Padé coefficients
Calculate Padé coefficients corresponding to a truncated Taylor series.
mer än 2 år ago | 3 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...
nästan 3 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...
nästan 3 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...
ungefär 3 år ago | 1 answer | 3
1
answerSubmitted
Generalized matrix operators
The functions mtimes_.m, mldivide_.m, and mrdivide_.m generalize the corresponding MATLAB functions.
ungefär 3 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...
ungefär 3 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...
ungefär 3 år ago | 3 answers | 11
3
answersSubmitted
Linear differential equation solver (lde.m)
solves a linear, first-order, vector differential equation
mer än 3 år ago | 2 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...
nästan 4 år ago | 1 answer | 3
1
answerSubmitted
str2subs, subs2str
Convert a string to/from a subscript struct for use in subsref and subsasgn.
ungefär 4 år ago | 2 downloads |
Submitted
fminsearch_(funfcn,x0,options,varargin)
Works around a bug (or design defect) in fminsearch.
mer än 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).
mer än 9 år ago | 2 downloads |
Submitted
Scalar
The Scalar base class disallows non-scalar instantiation.
ungefär 10 år ago | 1 download |
Submitted
Matrix exponential
Matrix exponential algorithm with improved numerical precision
nästan 11 år ago | 2 downloads |
Submitted
Matrix polynomial
Efficiently evaluate a polynomial with square-matrix argument and scalar coefficients.
nästan 11 år ago | 1 download |
Submitted
matrix power
more efficient than MATLAB's mpower function
ungefär 11 år ago | 1 download |
Submitted
elementwise power
more efficient than MATLAB's power function
ungefär 11 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
mer än 12 år ago | 2 downloads |
Submitted
Complex Erf (Error Function), Fresnel Integrals
complex erf function
mer än 13 år ago | 1 download |
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