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Kenneth Johnson
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Feeds
Submitted
Polynomial-to-Pade coefficient conversion
poly2pade converts polynomial coefficients to a Pade approximant's numerator and denominator coefficients.
16 hours ago | 0 downloads |
Submitted
roots_
roots_(c) works with poorly scaled polynomials and does not return zero when c(end) is nonzero.
16 hours ago | 3 downloads |
Submitted
Function pagetensorprod.m, paged tensor product
pagetensorprod generalizes tensorprod for paged operation (analogous to pagemtimes).
29 days ago | 1 download |
Submitted
Class DAA, "Derivative-Augmented Array"
Class DAA, "Derivative-Augmented Array", is a general-purpose automatic differentiation engine implemented in MATLAB.
2 years ago | 1 download |
Submitted
Padé coefficients
Calculate Padé coefficients corresponding to a truncated Taylor series.
2 years 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...
2 years 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...
2 years 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...
2 years ago | 1 answer | 3
1
answerSubmitted
Generalized matrix operators
The functions mtimes_.m, mldivide_.m, and mrdivide_.m generalize the corresponding MATLAB functions.
2 years 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...
2 years 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...
2 years ago | 3 answers | 11
3
answersSubmitted
Linear differential equation solver (lde.m)
solves a linear, first-order, vector differential equation
3 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/fdeb6d40-693f-4ac8-b8dc-9e1a6ee0a30b/1420a97a-3ea6-4abf-ac7a-39a3a61377b9/images/screenshot.jpg)
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...
3 years ago | 1 answer | 3
1
answerSubmitted
str2subs, subs2str
Convert a string to/from a subscript struct for use in subsref and subsasgn.
3 years ago | 1 download |
Submitted
fminsearch_(funfcn,x0,options,varargin)
Works around a bug (or design defect) in fminsearch.
8 years ago | 1 download |
Submitted
Generalized Matrix Exponential
Solves Y'(t) = D(t)*Y(t) for Y(1) with Y(0) = I (identity matrix).
9 years ago | 1 download |
Submitted
Scalar
The Scalar base class disallows non-scalar instantiation.
9 years ago | 1 download |
Submitted
Matrix exponential
Matrix exponential algorithm with improved numerical precision
10 years ago | 2 downloads |
Submitted
Matrix polynomial
Efficiently evaluate a polynomial with square-matrix argument and scalar coefficients.
10 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
12 years ago | 3 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/37634/versions/7/screenshot.jpg)
Submitted
Complex Erf (Error Function), Fresnel Integrals
complex erf function
13 years ago | 3 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/33577/versions/1/screenshot.jpg)