Jan

Last seen: 1 jour ago | Active since 2009

It is easier to solve a problem than to guess, what the problem is. Questions about FileExchange submissions are welcome - get my address from the code. I do not answer mails concerning questions in the forum.

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Error while running matlab script from Linux terminal
Is this a script or function? Obviously it is not included in the PATH. So either change the current path or add the folder to t...

2 jours ago | 0

Answered
Add code to have switch repeat if a case is not met
knownLevels = {'easy', 'medium', 'hard'}; Levels = [10, 50, 100]; fprintf('\nChoose one of the known levels: %s\n', strjo...

4 jours ago | 0

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When calling a user defined function, MATLAB throws an error for simple matrix multiplication
Use the debugger to examine the problem: dbstop if error Run your code again afterwards. If it stops at the error, check the d...

4 jours ago | 1

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Is it possible to programmatically check whether MATLAB has been started with the "-sd" option?
PID = feature('getpid'); [status, out] = system(sprintf('ps -p %d -o args', PID)) Parsing the char vector out is not trival: E...

7 jours ago | 0

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Answered
Generating a combination matrix within a certain condition
After some test I could simplify the original combvec and including the limit is easy also: % Without limit, but considering th...

8 jours ago | 1

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How can I apply filter with loop-based function instaed of using filter( ) : built in MATLAB function?
You can find a Matlab function for filtering here: https://www.mathworks.com/matlabcentral/answers/9900-use-filter-constants-to-...

8 jours ago | 0

Answered
Generating a combination matrix within a certain condition
It is easy to modify the code of a copy of Matlab's combvec function, which uses the class of the input: Change the zeros(., .) ...

9 jours ago | 1

Answered
How could I possibly iterate over three 3D arrays and use their variable names iteratively in the title and axes?
v_dx = struct('EField_h', EField_h(idx_phi,idx_theta,:), ... 'EField_v', EField_h(idx_phi,idx_theta,:), ... ...

9 jours ago | 0

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Answered
When I import google sheet into Matlab, I get the first line imported as the url for my google account sign in
If the file starts with <!doctype html><html lang="en-US" dir="ltr"><head> it is an HTML file, not a JSON file. Then jsondeco...

10 jours ago | 0

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How to display a single element from a matrix?
Indexing is a fundamental Matlab method. To learn the basics asking in the forum is less efficient than using the tutorials: Ge...

10 jours ago | 0

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How can I import multiple fig files into a single figure in a tiled layout?
Using a vector as 3rd input in subplot allows to span an axes over multiple blocks of the layout: FigH = figure; subplot(2, 3,...

10 jours ago | 0

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When triying to oppen a .m file instead of the editor oppening, a command prompt appears
Open the section "Editor/Debugger" in Matlab's preferences and select "MATLAB editor" as editor.

10 jours ago | 1

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Answered
Artefacts when filtering a contiguous signal
The final state of the filter parameters after the 1st block is not the value of the signal. Replace: zi = vec1(end-2:end); % ...

10 jours ago | 1

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Answered
How can I calculate trapz value based on an event counter and then plot it?
As far as I understand your code was almost working. I added an if condition to skip scalar data and shifted the index for the o...

10 jours ago | 1

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Answered
Polyfit polynomial badly conditioned on Linux whereas on Mac no warnings
The warning is serious. Although the results look find in your case, scaling the input is the way to go for a scientifically sta...

10 jours ago | 0

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Turn code into function
Instert one line on top: function ANameOfYourchoice and save the file as "ANameOfYourchoice.m".

11 jours ago | 0

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Running two very similar scripts, getting different resolution figures when exported.
It looks like one of the figures uses painters and the other one OpenGL as renderer. OpenGL is enabled automatically, if a more ...

12 jours ago | 1

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Answered
How to generate a specific number of values within a range ?
R = size(Q,1); First_second_ele = zeros(R,2); Y = zeros(R, 60); for k = 1:R tmp = nonzeros(qm(k,:)); %extraction f...

12 jours ago | 0

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Answered
What is wrong with for loop iteration that is put in a function?
function bool = composite(n) bool = false; % Create a default value if n > 2 for i = 2:n for j = 2:n ...

14 jours ago | 1

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Answered
How to define a function with multiple handle in a loop?
Is there a need to use an anonymous function? Why not writing a standard function? function y = pA(tau, s1, s2, s3) a=80/365...

14 jours ago | 0

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Answered
How can i achive this kind of plot?
Go to the FileExchange and search for "radar" or "spider" plots.

14 jours ago | 0

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Answered
Cell array and num2str comparison
The variable a is a cell array containing 2 scalar numbers, while b contains 2 CHAR vectors. a = {42, 12} c = {'42', '12'} Th...

14 jours ago | 1

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Answered
MATLAB PCode Warning on R2021a
This can happen only, if somebody has edited the file isprop.m . Modifying Matlab's built-in functions is not useful and this ca...

15 jours ago | 0

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Answered
Intersect() with with repetition
If you really need the redundant information in iAB_C, iAB_Cprime, idx1, idx2, this is faster than the original version tested w...

16 jours ago | 0

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Answered
How to quickly calculate the following function？
See also: https://fredrikj.net/blog/2022/02/computing-the-lerch-transcendent/ Calculating the sum seems to be more stable. F...

22 jours ago | 0

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Answered
Artifacts when converting .svg to pdf
The output is fine, if I open your SVG in Edge and print it to a PDF using doPDF (by the way: version 7, the modern versions are...

23 jours ago | 0

Answered
I want compare the differences from each block of 10 values to the next block of 10 values until the given 100 sets of values are compared.
According to the text of the question (but not the posted code): A = rand(100, 1); B = reshape(A, 10, 10); C = diff(B...

environ un mois ago | 0

Answered
Mathlab program solving answr below
Maybe you want to replace for i = 1:n by for i = n:-1:1

environ un mois ago | 0

Answered
Nesting depth and the error "Expected one output from a curly brace or dot indexing expression, but there were x results."
R2022a creates a different error: a(1).x.y=1; a(2).x.y=2; [a.x.y] "instead of just listing all values from across all indexe...

environ un mois ago | 1

Answered
change user name on shared laptop?
Try to start Matlab with a batch script: SET "USERNAME=Test_Name" "C:\Program Files\MATLAB\R2022a\bin\matlab.exe" What do you...

environ un mois ago | 1

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