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Workaround for matrix dimension error
Hints: Avoid repeated code. Prefer: brtn = 255 * get(handles.slider1, 'Value'); instead of writing 255*brtn whenever brtn is ...

3 months ago | 1

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how to reduce the size of checkbox
This will not work realiably. Even the OS can change the sizes of specific GUI elements. Use an uitable instead, (see Fabienne's...

3 months ago | 0

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How to clear (not close) all the opened figures?
function clfall FigList = findall(groot, 'Type', 'figure'); for iFig = 1:numel(FigList) try clf(FigList(iFig)); ...

3 months ago | 0

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Answered
Calling sub-function (local function) from another file on Matlab
This would work: % main.m file: ----------- function out = main(Command, varargin) switch Command case 'sub_function' ...

3 months ago | 0

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My code is running so long and never gives solution.
To accelerate your code, you can store the results of e.g. D1^5/pi^2 in a variable. This avoids 20 expensive power operations in...

3 months ago | 0

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Index in position 1 exceeds array bounds (must not exceed 1).
We cannot know, what YBUS and IP_DATA is. It is your turn to check, if the error message concerns the variable e, g or f. Do thi...

3 months ago | 0

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Answered
Saving Tiffs from cell array using imwrite in a loop
for k = 1:numel(ca) imwrite(ca{k}, sprintf('s%d.tiff', k), 'compression', 'none'); end Prefer a naming scheme like s0001....

3 months ago | 0

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Answered
Merge two colums into one
Assuming that X is your matrix: C = X(:, 2); match = isnan(C); C(match) = X(match, 1);

3 months ago | 0

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I want to save multiple images in a folder?
See https://www.mathworks.com/matlabcentral/answers/57446-faq-how-can-i-process-a-sequence-of-files for k = 1:5 FileName = s...

3 months ago | 0

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Answered
Error after moving function .m file: 'Previously accessible file "...\z_estimate.m" is now inaccessible'
"saved the file in the top-level MATLAB folder instead of the subfolder "my_functions", which is also on my Matlab path" This s...

3 months ago | 0

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From Euler Angle to Angle between 2 vectors
There is no mathematical definition of "one angle between 2 3D-bodies". There is more than 1 degeree of freedom. An angle betwee...

3 months ago | 0

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Error Index exceeds matrix dimensions
After [x ,y] = min(Data(i)); x is a scalar. Then x(i) cannot work for i > 1. By the way, as Adam has said alread, x(i)=x(i) ...

3 months ago | 0

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Coding for nested loop problem
for p = 1:10 for q = 1:10 if p ~= q ... end end end Without a for loop: x = rand...

3 months ago | 0

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Data filtering(Give a constraint to the length of each index )
There are more efficient ways, but starting with a simple loop is a good apporach: data = [ 1 201; 1 202; 2 301; 2 313; 2 311;...

3 months ago | 1

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Creating 1024 ToggleButtons with almost the same callback
A simplified version of your code: function buttonPress(hObject, EventData, handles) global TData brtn = get(handles.slider1,...

3 months ago | 0

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lock first app if second is running
You can use waitfor in the main function and provide the handle of the uifigure. [EDITED] I assume, that https://www.mathwork...

3 months ago | 0

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How to introduce a phase shift to a existing vector
This is not possible, if you do not have additional information. You can apply a phase shift with a certain number of elements, ...

4 months ago | 1

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question regarding 'copyfile' function from folder to folder
This is exactly, what you find in the documentation. Please read: help copyfile doc copyfile [SUCCESS,MESSAGE,MESSAGEID] = ...

4 months ago | 0

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To take pictures from FLIR (Cx series) camera every 30 secs
Use a timer object and insert the code for taking a picture in its callback. doc timer

4 months ago | 1

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Changing the name of a variable throughout the code but only want it to change in a section.
Copy the text block, which you want to modify, to a new editor window. Perform the wanted modifications. Copy the block back to ...

4 months ago | 0

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How can I use "system" command with input without typing myself all the input everytimes ?
Please take a look into the documentation of dammif: https://www.embl-hamburg.de/biosaxs/manuals/dammif.html Here you can see h...

4 months ago | 1

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Answered
Efficient algorithm for a duplication matrix
For n=300 this needs 1.3 sec instead of 27.5 sec: tic m = n * (n + 1) / 2; nsq = n^2; D = spalloc(nsq, m, nsq); row = 1...

4 months ago | 1

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Answered
How to detect change in mean value of a signal
It is impossible to detect a change, if it occurs in the first or last few frames. Ist there only 1 change of the mean? Then f...

4 months ago | 0

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How can I export only specific data from a text file to a matrix?
With some guessing, that you want the part behind ':Solar_Radio_Flux:' : Key = ':Solar_Radio_Flux:'; Str = fileread(FileName)...

4 months ago | 0

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Answered
Parse error help please
I guess, this line is failing: Jsx*der(wx) = (Fflz + Frlz)*w/2 - (Ffrz + Frrz)*w/2 + (Ffyv + Fry)*h; Yes, of course. In Matlab...

4 months ago | 0

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Alternative to delaunayn function supported by MATLAB coder for the C++ code generation
Matlab uses qhull for the calculation of delaunayn. qhull is a library written in C, see here: http://www.qhull.org/ So it shou...

4 months ago | 1

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Answered
decrease the elapse time
The output of the profile is useful - thanks. The most time is spent here: [days(:,:,i), time(:,:,:,i), I(:,:,:,i), Ta(:,:,:,i...

4 months ago | 0

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How would I change the color of the angular axes without changing the color of the grid lines in polar plot
AxesH = polaraxes; theta = 0:0.01:2*pi; rho = sin(2*theta).*cos(2*theta); polarplot(AxesH, theta, rho) AxesH.GridColor...

4 months ago | 0

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I do not understand why my code still gives me errors
Index exceeds the number of array elements (1). Error in RK (line 8) k(:,1)=feval(fun,t(j),y(:,j)); After the line: ...

4 months ago | 1

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Answered
Index exceeds matrix dimensions ERROR
Using global variables is a bad programming style. It impedes the debugging massively. It is hard to find out, which code has se...

4 months ago | 0

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