Answered
Using symbolic syms inside a Simulink Function — Error: Symbolic not allowed
You cannot mix symbolic variables and Control System Toolbox or Simulink Control Design https://www.mathworks.com/help/slcontrol...

2 months ago | 1

Answered
i have "Error in state of SceneNode. String scalar or character vector must have valid interpreter" Please help me to solve it T-T
The TeX interpreter does not support any of the trig functions. https://www.mathworks.com/help/matlab/ref/text.html#f68-481090...

2 months ago | 0

Answered
transmission time of reading the first 200 lines of a large .csv file using datastore from AMZ S3 to a local computer
I suspect that more than 200 lines are being examined automatically in order to deduce the format of the data. If, for example, ...

2 months ago | 0

Answered
Solve system of equations
Examine the second and third equations. The terms - B4*a0 - B2 are the same between the two of them, so you can subtract the two...

2 months ago | 1

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Answered
How to use MATLAB UAV Toolbox
If you have a Student or Student Suite license, then you can purchase the UAV toolbox. For most people you can use https://www.m...

2 months ago | 1

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Answered
Using logic to select specific values in a matrix
A = SmallerSample assuming that A is a table idnt = A(:,1) == 1 ; () subscripting of a table yields a table. == has, somewha...

2 months ago | 0

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Answered
Integer conversion without precision loss for literal function inputs
Does anyone know if there is a trick to get this functionality There is no way of doing that. Any way of doing that would have...

2 months ago | 2

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Is there a contourc equivalent for contourm?
You can make the contourm() call within a Process based parallel pool (such as using parfeval()). This has notable overhead......

2 months ago | 0

Discussion

cody comment voting idea
In https://www.mathworks.com/matlabcentral/answers/38165-how-to-remove-decimal#comment_3345149 @Luisa asks, @Cody Team, how can...

2 months ago | 0

Answered
Does Symbolic Math Toolbox Formally Support Function Composition?
This is not legal: syms f(x) g(x) h(f, g) = f + g

2 months ago | 0

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Answered
no correct reaction time or button press possible
Using tic/toc will not accurately measure reaction time. I would recommend that you use methods from the third-party Psychtoolb...

2 months ago | 0

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Table with multiple types
PType = 'R'; PData = uint32(391); app.LicksTable.Data = [PType,PData] app.LicksTable.Data The [] operation between a char an...

2 months ago | 0

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Answered
In R2024b, handles(33) throws an error. In R2023b in returns a structure if there is a figure 33. Is there a workaround in R2024b?
try figExists = isempty(fields(handle(33))); catch ME figExists = false; end It turns out that uifigure() can have a...

2 months ago | 0

Answered
Can someone open this example?
I can open it in R2024b on MacOS Intel (with 'help' configured for 'web' rather than installed locally) I can open it in R2025a...

2 months ago | 0

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Error using assignin in a nested m function
testit() function testit inner() function inner syms q end end When you have nested functions, the wo...

2 months ago | 0

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Answered
MathWorks Licensing Error 83 Your license server is not configured for this release of MATLAB. We already have the license.dat for R2025b_Update_1
You need lmgrd 11.19.7 https://www.mathworks.com/support/install/license_manager_files.html

2 months ago | 2

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field name to string
When MATLAB encounters a.b in a calling sequence, then the "a" portion gets dereferenced, and the anonymous memory for "b" gets ...

2 months ago | 0

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How to run spsConversionAssistant?
Note that if you install R2025b Update 1, then Specialized Power Systems is restored; invoke sps_lib to see it in the library br...

2 months ago | 0

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Answered
How to create a very large array with an incremently named variable?
Don't Do That. If you are loading arrays from a single .mat file, then instead of using load FILENAME use STRUCTURE = load(F...

2 months ago | 0

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Answered
In the new version, the Simulink library function update is no longer available. How can it be replaced?
SPS is back in R2025b Update 1. (You might have to command sps_lib to see it.)

2 months ago | 0

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Extracting coefficients from symbolic expression
syms P121 P131 P151 P122 P132 P152 cosd sind cosdphi12over2 cosdphi13over2 cosdphi15over2 sindphi12over2 sindphi13over2 sindphi1...

2 months ago | 1

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Can i still use MATLAB for free after the free 30-day trial?
You can use MATLAB Online for 20 hours per month without any active license. I am not sure if that gives you any Simulink acces...

2 months ago | 0

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solve function depend on z
You can divide res by s^4, and you can then substitute s = sqrt(S), and then collect on S. You will obtain a degree 7 polynomial...

3 months ago | 0

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Answered
How to apply a generated filename to the mex command?
script_version = "8_1"; process_filename = strcat("myfile", script_version, ".c"); mex(process_filename)

3 months ago | 0

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Answered
unable to add namespace folder +toml to the project path
https://www.mathworks.com/help/matlab/matlab_oop/namespaces.html To be accessible to MATLAB, the parent folder of the namespac...

3 months ago | 0

Answered
I've TI Launchpad 28379D and TI BOOSTXL-K350QVG-S1 display. I'm using simulink and would like to display voltage and current reading to TI LED screen. How would I go about it?
Fork the ADC pin output. Use Compose String https://www.mathworks.com/help/simulink/slref/composestring.html to put in the "Stri...

3 months ago | 0

Answered
How can I extract the time length (in miliseconds) between two audio signals?
You can use https://www.mathworks.com/help/audio/ref/detectspeech.html or https://www.mathworks.com/help/audio/ref/voiceactivity...

3 months ago | 0

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I am getting the following error
Most likely, you have one too many end statements I recommend using the editor facility "Smart Indent", which I believe has sho...

3 months ago | 0

Answered
Defining Global Variables in the function
function out = Area_Integral(k, rho_0) global k rho_0 When you receive a parameter into the same name as a global variable, t...

3 months ago | 0

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Answered
I can't find the powergui block and components like a full-bridge MMC. I'm using MATLAB 2025b, yet I don't see that I have Specialized Power Systems in Simscape Electrical.
It is gone in R2025b. There are reports that it will re-appear in R2025b Update 1, but that is not confirmed. Also it appears...

3 months ago | 0

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