Respondida
How to create a vector for multiple frames of data in rows and columns?
The actual question is: "I need to create a vector that corresponds to the time of each frame starting at 0" What about: t = l...

más de 3 años hace | 0

Respondida
How to read a specially structured data file
[fid, msg] = fopen('test.5p'); assert(fid > 0, '%s', msg); C = fscanf(fid, '%g', inf); % Read all in one block fclose(fid); ...

más de 3 años hace | 2

Respondida
how to reduce the size of array as small as the smallest array to have them in one matrix
There are several possibilities: Fill the shorter arrays with zeros or NaNs on the top, bottom or both. Crop the longer arrays...

más de 3 años hace | 0

Respondida
How to make a folder, call functions from it, and then go back to the current directory
Changing the current directory is not useful in stable code, neither to process data nor to run Matlab functions. The addpath c...

más de 3 años hace | 1

Respondida
Why is my function not working?
Avoid using the name of the function as name of the output. This is confusing only. Which is the failing line? In this line f35...

más de 3 años hace | 1

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Respondida
How to put non repeated elements of a symmetric matrix in a row vector?
You have hidden an index in the name of the variables. This was a bad idea. It is time to re-organize your data. Are all these ...

más de 3 años hace | 1

Respondida
can we share our original code here,?
The FileExchange is a suiting location for sharing code, while the Answers forum is not. Plagiarism does only occur, if the cop...

más de 3 años hace | 0

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how to plot subfigures in one figure like this image?
subplot calls axes with specific 'Position' proerpties inside. You can do this directly also. ax1 = axes('NextPlot', 'add', 'Vi...

más de 3 años hace | 0

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Respondida
why two function in separate m.file not in one ?
If you need a function inside another one only, you can store it in the same M-file. If other function should have access to the...

más de 3 años hace | 0

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Setup alias command in Windows.
As far as I understand, Matlab does not run in the command shell under Windows. Maybe the -batch or -wait flags are useful. See...

más de 3 años hace | 0

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Respondida
How to create function handle using random output
Maybe: maximand = @(x) f([p_bar, q_bar, r_bar, x(randperm(3, 3))])

más de 3 años hace | 0

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use two indexes at the same time in a for loop
for i = 4:5 & k = 1:2 This is pure guessing. While some human can understand, what you want, if you apply such trivks inspo...

más de 3 años hace | 1

Respondida
How do I add a left/right axis to a plot in matlab 2013a
You find several corresponding FileExchange submissions: https://www.mathworks.com/matlabcentral/fileexchange?q=plotyy plotyy ...

más de 3 años hace | 0

Respondida
WindowButtonMotionFCN callback slow down the application
Try if rejecting repeated calls solve the delay. See e.g. https://www.mathworks.com/matlabcentral/answers/570829-slow-sizechange...

más de 3 años hace | 0

Respondida
how to do break the program written in script file and execute
Breakpoints are a good idea: Simply click on the bar on the left side of the editor. You will see a red dot occurring there. Mat...

más de 3 años hace | 0

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Image processing of a binary image
w = 300; % Image size bigR = 140; smallR = 15; wantN = 40; % Number of small circles N = 0; center = zeros(...

más de 3 años hace | 0

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How can I get a variable that starts in t=0?
y(1, 1) = 500; % Set initial value before the loop for t = 1:249 % y(1, :) is defined already, so start at t=1, not t=0 ...

más de 3 años hace | 1

Respondida
Most practical way to speed up calculations?
I've seen many examples in the forum, where the old and fundamental method of vectorization slows down the execution compared to...

más de 3 años hace | 0

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Respondida
How to create 4D array of images
Maybe this is enough: List = dir('C:\ParentOf_A_B_C', '**', '*.gif'); Array = []; for k = 1:numel(List) img = imread(fu...

más de 3 años hace | 0

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How to perform derivative of a random signal without finite difference schemes?
You can try a Savitzky-Golay-Derivative filtering: https://www.mathworks.com/matlabcentral/fileexchange/30299-savitzky-golay-smo...

más de 3 años hace | 0

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fprint f for a matrix
x = [0 3 0; 1 2 3]; c = sprintfc('%g', x.'); c(x.' == 0) = {''}; fprintf('\t%s\t%s\t%s\n', c{:}) % Or: s = compose("%g",...

más de 3 años hace | 0

Respondida
How can I reuse numerical values them back as inputs?
Working with functions is the way to go. You cannot use Matlab efficiently without functions. But as far as I understand, your ...

más de 3 años hace | 0

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Can I access local functions for unit testing
You can call subfunctions only from their main function. This impedes a unit-testing. But the main function can provide a functi...

más de 3 años hace | 0

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Respondida
why do I receive not enough input arguments
signal_avg_limt "(Dec20-1(cut4&2)_filter, 50, 094167" This calls the function with 1 argument: a string. I guess you mean this ...

más de 3 años hace | 0

Respondida
Truncate strings to maximum length
Omit arrayfun: str = ["ab", "cdefg"]; extractBefore(str, min(4, str.strlength())+1) If this still looks to clumsy, write your...

más de 3 años hace | 1

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How to share relatively large data among GUI callbacks?
50 MB is not a large array in times of Gigabytes of RAM. Sharing an array by guidata does not create deep copies, but Matlab use...

más de 3 años hace | 0

Respondida
In what way is the new R2021b Editor UI "improved"?
I still miss the editor option existing inMatlab 6.5, which allowed to provide the selected text as input to functions defined b...

más de 3 años hace | 0

Respondida
Decode a base64 code into a audio file and save it
Look into the output of the base64 decoding. You find these characters on the top: .E...B...B...B...B...B.. webmB...B....

más de 3 años hace | 1

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Respondida
Sort producing inconsistent results when re-ordering legend
lines = sort(findobj(gca,'type','Line')) This is a bad idea. findobj replies the handles to the line objects. To feed sort with...

más de 3 años hace | 0

Respondida
How shift output of array
If the transformation should be linear, this is a multiplication: a = [-1, 1] b = a * pi But "[-1 -0.5 0 0.5 1] -----> [-p...

más de 3 años hace | 0