Star Strider
Hic sunt dracones! PROFESSIONAL: Physician (M.D.): Diplomate of the American Board of Internal Medicine; M.Sc. Biomedical Engineering: Instrumentation, Signal Processing, Control, System Identification, Parameter Estimation NON-PROFESSIONAL: Amateur Extra Class Amateur Radio Operator; Private Pilot, Airplane Single Engine Land, Instrument Rating Airplane; Gamer NOTE: I do not respond to emails or personal messages, unless they are about my File Exchange contributions. Time Zone: UTC-7 (Standard); UTC-6 (Daylight Savings/Summer)
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Signal is noisy and needs filtering
You first need to filter the incoming signal with a lowpass Bessel filter (anti-aliasing filter) in hardware with a cutoff frequ...
2 giorni fa | 0
Execution of script mpower as a function is not supported
You most likely have a script you saved as mpower.m. Do something like this to determine that -- which mpower -all Your r...
7 giorni fa | 1
Error "Unable to perform assignment because the indices on the left side are not compatible with the size of the right side"
I could not replicate your error. This seems to work -- % dy(1)=2*y(1)+y(2)+5*y(3)+exp(-2*t) % dy(2)=-3*y(1)-2*y(2)-8*y(...
21 giorni fa | 1
| accettato
Unable to download the "MATLAB R2026b prerelease" version?
Check the MathWorks Status page. Currently in the U.S., everything seems to be operating normally.
circa un mese fa | 0
Why can't I use a toolbox that appears to be installed?
One possibility is a path problem. Run these, then run your commands to see if it is -- restoredefaultpath rehash toolbox...
circa un mese fa | 0
Turn off dark mode on web
In MATLAB Online, first, go the the 'HOME' tab, then in the top toolstrip in 'ENVIRONMENT', click on the 'Settings' icon. This ...
circa 2 mesi fa | 0
starting matlab after intall on linux
'Debian' without the version number is a bit ambiguous. See: MATLAB R2026a System Requirements for Linux to be certain you ha...
2 mesi fa | 0
| accettato
STFT for state of polarization data
I am not certain what you might be looking for in your data. I would use the pspectrum function witth the 'spectrogram' optio...
2 mesi fa | 0
It wants probability of a copier
It would seem that the probability of a defective copy is simply the number of defective copies per total copies (assuming that ...
2 mesi fa | 0
add hours to timetable time cell array
Try something like this -- A = {{'2026-05-23 09:55'} 271 {'2026-05-23 09:50'} 265}; T1 = cell2...
3 mesi fa | 0
I need to apply a nonlinear fit to chemical system data
See if the approach in Parameter Estimation for a System of Differential Equations does what you want. This assumes that you...
3 mesi fa | 0
Count number of true statements in a sequence until false, then check for the next true and repeat
Using strfind -- V = [0,0,0,0,0,0,1,1,1,0,0,1,1,1,1,1,1,0,0,0,1,1,1,1] == 1; V2 = [false V false] ...
3 mesi fa | 1
help with XYZ data file
You may only need to use reshape (with the same last two arguments) on each of the vectors, rather than using scatteredInterpola...
4 mesi fa | 0
| accettato
Best way to fit functionals with error bars
That depends on what the error bars indicate, and the information you have about them. A common way of weighting a regression...
4 mesi fa | 0
| accettato
Trying to create a referenceEllipsoid for a fantasy exoplanet. How do I get a valid value for input number 1, 'name', that is not on the list of referenceEllipsoid values?
The only reference I can find for 'darodar' has to do with a spam referrer. (Perhaps choose another name?) That aside, if 'd...
4 mesi fa | 0
Plot not showing anything with too many NaNs
You will most likely need to Contact Support for this problem. Include the URL of this thread in your note to MathWorks so yo...
4 mesi fa | 1
| accettato
Why am I getting error "too many input arguments" when using referenceEllipsoid and oblateSpheroid?
All the values apparently must be assigned as properties of the original objects after creating each, rather than passed as name...
4 mesi fa | 0
Axis not held using hold command in plot3
It would be nice to know what the point values are, and if you are restricting the axes in some way by using xlim, ylim, zlim or...
4 mesi fa | 0
| accettato
how can i do FFT analysis in MATLAB R2025b ?
That depends on what you want to do. I created this function to do preliminary Fourier analyses on signals with a corresponfd...
4 mesi fa | 0
Please help me to run this simple relation
Probably the easiest way to do this is with a surf plot. Here, I combined it with a contour plot as well, using the surfc funct...
4 mesi fa | 0
When plotting 3D graphs in MATLAB, can the x and y axis labels be made flush with the x-y plane, as shown in the figure below?
@Bruno Luong came up with something similar (How can I rotate the axes' labels parallel to the orientation of the axes?) in 2023...
4 mesi fa | 1
Symbolic solve not returning all values
There are two equations because they are the roots to a quadratic equation. sympref('AbbreviateOutput',false); syms Va Vi ...
4 mesi fa | 0
| accettato
MATLAB publish equation adds $ to alt tag
The purpose of the dollar signs ($) is to use it with the LaTeX interpreter.
4 mesi fa | 0
I want to install Matlab 2010b on a new (2026) HP desktop
You will most likely need to Contact Support for this problem. Include the URL of this thread in your note to MathWorks so yo...
4 mesi fa | 1
chebyshev II BPF magnitude response is not equal to 1 in the passband - incorrect magnitude response when using freqz(b,a)
In general, using the polynomial numerator and denominator implementation of digital filters is not optimal. Using the second-o...
4 mesi fa | 1
| accettato
How to use the nonlinear least square fitting to fit a transfer function？How to improve the fitting accuracy
The easiest way to do that is with the System Identification Toolbox. It was created to solve exactly this sort of problem. ...
5 mesi fa | 2
proper IFFT procedure for converting S-params into time domain reflectometry
Inverting something like that is always something of a problem. While the nufft function can take irregularly-sampled time ve...
5 mesi fa | 0
GA stops with different score every time, even with setting big MaxGeneations and MaxStallGenerations
The results of genetic algorithm (ga) optimisation improve with the initial number of individuals ('PopulationSize') and the num...
5 mesi fa | 1
what's wrong with matlab dsolve ?
You can use the rewrite function to get it in a particular form, however MATLAB doesn't appear to agree with your solution -- s...
5 mesi fa | 0
How do I find the degrees of freedom of a cubic spline fit to calculate AIC and BIC
Your question intrigued me, and since the documentation doesn't address it, I looked it up. The degrees-of-freedom in a cubic s...
5 mesi fa | 1
| accettato
