Answered
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 ...

mer än ett år ago | 0

Answered
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...

mer än ett år ago | 0

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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...

mer än ett år ago | 0

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

mer än ett år ago | 0

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Answered
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 ...

mer än ett år ago | 1

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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...

mer än ett år ago | 0

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Answered
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...

mer än ett år ago | 0

Answered
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...

nästan 2 år ago | 0

Answered
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",...

nästan 2 år ago | 0

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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 ...

nästan 2 år ago | 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...

nästan 2 år ago | 0

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Answered
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 ...

nästan 2 år ago | 0

Answered
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...

nästan 2 år ago | 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...

nästan 2 år ago | 0

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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...

nästan 2 år ago | 0

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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....

nästan 2 år ago | 1

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Answered
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...

nästan 2 år ago | 0

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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...

nästan 2 år ago | 0

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How to write ASCII characters corresponding to decimal numbers into a file?
This writes the character 'A' at the current file position: n = 65; fwrite(fid, n, 'char')

nästan 2 år ago | 0

Answered
For loop to delete rows from matrix
M = randi([0, 5], 10000, 5); % Some test data P = M(M(:, 2) == 3, :); % Keep only rows, which have a 3 in 2nd column % ...

nästan 2 år ago | 0

Answered
pass a struct through a loop to extract data and have the i in the loop added to the name
The best idea is to use an index as index: accuracy_totals(1).accuracy_total(i) Arrays are smarter than a pile of fields with ...

nästan 2 år ago | 1

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Answered
CELL2MAT does not support cell arrays containing cell arrays or objects
table2struct(direc); This line converts the table direc to a struct, but ignores the result. In consequence this line has no ef...

nästan 2 år ago | 0

Answered
What is the most efficient way to "reverse" interpolate a 3D array?
Creating the grid matrices is not useful. The interpolation is about 10 times faster using the original vectors. % Omit: % [b...

nästan 2 år ago | 0

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Answered
I want to extract digits from a cell array but not the digit zero
data = readcell('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1291690/Extract.xlsx'); nRow = height(data); ...

nästan 2 år ago | 1

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Answered
manual script for loop
MedComb(:,1) = 1:15; MedComb(1:15,2:6) = NaN; xcol = 20:24; for i1 = 1:2 for i2 = 0:1 [r, c] = find(tNino...

nästan 2 år ago | 0

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Answered
Why I'm getting this error( Array indices must be positive integers or logical values)?
When I run your code, it stops with the error, the w is undefined in the line: w(n+1) = w(n)+(2*0.01*e*[x(n),x(n+1),x(n+2)])% ...

nästan 2 år ago | 0

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How to get around using pack function in matlab 2022b?
The pack command is not useful anymore. Try to comment it out in the code. Asking the author is a good option also.

nästan 2 år ago | 0

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Answered
Invalid use of operator
The old problem: Strange methods to define names of variables dynamically using eval() demands for even stranger methods to acce...

nästan 2 år ago | 0

Answered
How to check that these points formulate flat plane(on the same plane)?
P1 = [396326796.725069,-205153846.153846,0,0,0,0]; P2 = [-205153846.153846,396326796.725069,-205153846.153846,0,0,0]; P3 = [0,...

nästan 2 år ago | 1

Answered
Monod nonlinear regression solved with Ode45
A guess: You call the function ParameterJack with 2 inputs: w=ParameterJack(ps,t); But the function requires 5: function dCdt...

nästan 2 år ago | 0