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unpause from a uifigure
I still don't understand the workflow. It sounds like you may have some existing figures (either old style figures or new style...

3 months ago | 0

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How to change the menu appearance in a gui created by GUIDE
Not in R2025a and later because it doesn't allow changes to GUIDE guis. But for earlier versions, I think all the pulldown menu...

3 months ago | 0

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MATLAB R2025a won't start after uninstalling R2023a
See the FAQ and do EXACTLY what it says to do in there: https://matlab.fandom.com/wiki/FAQ#After_installation,_MATLAB_crashes_o...

3 months ago | 0

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Random lags while running app
See if the problem goes away if you set the priority of any of your program's processes to High. Type Control-Shift-Esc to brin...

3 months ago | 0

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Trying to determine locations of markers in image
I recommend you use the code in the other answer to get the "cleanMask" binary image above. Then use regionprops to get the cen...

3 months ago | 0

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Getting an error saying "Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters"
You have too many parentheses. This works: L = 21; rec_signal = rand(L, 4); %% Root Mean Square envelope (moving average) ...

4 months ago | 1

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Answered
How to eliminate uneven illumination from an imgae with respect to another image?
No, that won't do it. And I don't know what you mean by with respect to another image. The best way to flatten out an image to...

4 months ago | 0

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Can uigetfile function be used to return file name & location for a file that is already open?
What other process opened the file you are trying to select with uigetfile()? What kind of functions are you planning on using ...

4 months ago | 0

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how to create column vector by inputs with matlab app designer to have final vector throught inputs
You can use a table. Attached is a working example.

4 months ago | 0

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Just downloaded MATLAB 2025a: Workspace is blank and greyed out
Works for me. I think you should call tech support and say it's an installation issue (so you'll get free tech support).

4 months ago | 0

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How to merge red and blue images on white background with transparency
Does it look acceptable if you just average them? weightR = 0.5; % Change as you want it. weightB = 0.5; dblImage = weightR *...

4 months ago | 1

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edge detection operator error
It seems to work fine: a = imread('peppers.png'); figure; imshow(a); b = rgb2gray(a); figure; imshow(b); c = edge(b,'sobe...

4 months ago | 0

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Apps created with app designer are not displaying components positioned correctly
Yes, what you say is very true. I've spent hours with tech support to find some solution to the App Designer layout nightmare. ...

4 months ago | 2

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Answered
How i crop the image using image processing?
I made an attempt to recover your original image using rgb2ind. Try this. Adjust threshold if you want. Raise it if you want ...

4 months ago | 0

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In App Designer, how can I ensure that the values displayed on the UI do not appear in scientific notation?
Where or how are you displaying them? If you're using fprintf or sprintf, use %.3f or %g in your format specifier. If you're j...

4 months ago | 0

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Answered
MNPBEM Error - Issue with dot product in tripolygon file
That does not seem to be a Mathowrks toolbox. I suggest you supply your faces and vertices in a .mat file to the publishers of ...

4 months ago | 0

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How do I redraw a picture given to me using its data points that I've found using the curve fitting app?
There may be other errors, but for one, you can't use 0 as the index into an array: D(0,0,0)=1; % Will throw error. Indexing s...

4 months ago | 0

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Cannot install Matlab 2006b on my Windows 11 laptop
See the FAQ: https://matlab.fandom.com/wiki/FAQ#During_installation,_the_installer_crashes,_hangs,_gives_an_error_message,_does...

4 months ago | 0

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MATLAB Classification Learner App
Here is what the AI Chat Playground says: Question: Does ClassificationLearner app use the same training and holdout sets for a...

4 months ago | 0

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Hello everyone, I need help. I am working on a robot arm project using MATLAB and a webcam to detect colors. Do you have any lessons or tutorials for me?
Sounds like you have a very controlled environment with known and fixed colors. What you could do with the image is to first ma...

4 months ago | 0

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Answered
Connecting points on opposite end of mask
If you can get the inner boundary and outer boundary as separate arrays, then it would be easy to find the boundary point closes...

4 months ago | 0

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I am trying to find each particle area and each particle intensity through matlab.
Not sure what you mean by "Gaussian method" or by "I want to calculate individual or each particle intensity not the mean intens...

4 months ago | 0

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How can I extract the crack from the noise and human drawn grid lines?
What I would do is to first get rid of the grid lines, then analyze what's left for cracks. To determine the grid line location...

4 months ago | 1

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Answered
background subtraction to detect human
If the common background is not zero then the images are not registered (aligned) or the brightness (pixel values) of the backgr...

4 months ago | 0

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Estimate area under a curve using finite approximations (lower sum with 4 rectangles of equal length)
Try this: f= @ (x) x.^2; x1=0; x2=1; n=4; totalArea=0; dx=(x2-x1)/n; % width of rectangle x = linspace(x1, x2, ...

5 months ago | 1

Answered
your mathworks account login session has expired
I've notified the Mathowrk account team of the issue and they are looking into it. In the meantime, someone called them and the...

5 months ago | 1

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Stuck in installation process after accepting terms of license agreement
Try the FAQ: https://matlab.fandom.com/wiki/FAQ#During_installation,_the_installer_crashes,_hangs,_gives_an_error_message,_does...

5 months ago | 2

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Answered
How can I plot a 3D parabolic trajectory?
For what it's worth, see my attached demo where I compute just about everything you could want to know about a projectile and it...

5 months ago | 1

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Help my password doesn't work to install updates
Can you login to the mathworks.com site from your internet browser with the same password? If not, try changing it then logging...

5 months ago | 1

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How to remove least significant bits in a pixel.
A simple method that works for both color and gray scale images is to use bitand: inputImage = imread('lena.jpg'); % Set last ...

5 months ago | 0