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Help with getting data from image at equidistant positions from the centre - to include the "off circle corners"
[M,N]=size(yourImage); c=[M+1,N+1]/2; %image center rho=hypot((1:M)'-c(1), (1:N)-c(2)); G=discretize(rho,0:2:norm...

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differentiable approximation of bandwidth in ksdensity for optimization
ChatGPT offers the following:

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Variables Unrecognized in parfor but Work in for Loop
I am aware of this, but I was hoping to avoid writing 'params.' to reduce clutter in my code. You might consider this File Exch...

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Variables Unrecognized in parfor but Work in for Loop
You should not be using eval to create new variables, regardless of whether the loop is parfor or a regular for loop, see also, ...

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Can binarization be applied to a masked area only?
or if there is a way to discard evertyhing else outside the mask? Yes: Image=Image.*mask *Do I have to make a mask for each c...

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Efficient access and manipulation of arrays in nested cells
There is no way to iterate over cells (nested or otherwise) without a loop, or something equivent in performance to a loop (cell...

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Error using trainNetwork (line 191) Invalid training data. The output size ([1 1 2]) of the last layer does not match the response size ([512 512 2]).
It doesn't make sense that you have a "mask" unless you are doing semantic segmentation (i.e. pixel-by-pixel classsifcation), an...

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Optimization stopped because the relative changes in all elements of x are less than options.StepTolerance = 1.000000e-06, but the relative maximum constraint violation, 9.999
Your ConstraintTolerance setting is extraordinarily large. Did you mean to have, ...'ConstraintTolerance', 1e-7)

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Nested fmincon call to solve min max optimization
To solve without nested optimization, reformulate as, which can be solved using ...

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How can i use symbolic variables in a parallel Computing (parfor)?
Dlu_11_1= zeros([M,N,N,M], 'sym') ; parfor t=1:(M*N)^2 [ki,kj,j,i]=ind2sub([M,N,N,M],t); Dlu_11_1(t)=d...

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Question

Are dlnetworks supposed to be allowed to have output layers?
Are dlnetworks allowed to have output layers? In the following code, I manage to create one, so the answer would seem to be yes....

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How to install Graph Neural Networks Toolbox on MATLAB2024b
There is no such toolbox natively supplied by the MathWorks. If you're talking about a 3rd party toolbox, you should ask its aut...

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Fit Ellipse to structure in image
I recommend downloading this, https://www.mathworks.com/matlabcentral/fileexchange/87584-object-oriented-tools-to-fit-plot-coni...

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I want quick access toolbar strip (Data strip, ZoomIn, ZoomOut, etc.. buttons) on my 2019b MATLAB figure/plot window.
addToolbarExplorationButtons(fig)

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Find orientation of a blade-shaped object
I would like to measure its orientation with an accuracy close to 0.1°. The accuracy will be influenced by the quality of your ...

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vpasolve finds no solutions except the null solution
With numerical algorithms like vpasolve, you never can tell what it will find, if anything. In any case, lsqnonlin seems to offe...

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How to fill a blank cell with the value of the cell above it in a table?
The only line of code you need is this one data.Var1=fillmissing(data.Var1,'previous') Get rid of the lines around it. Var1={...

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How to put a legend outside of a tiled layout graph?
TL=tiledlayout(4,1); %Outer Layout tl=tiledlayout(TL,3,1); %Inner Layout -- child of TL tl.Layout.Tile=1; tl.Lay...

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polyshape fractures after multiple merges
Perhaps I don't fully understand the logic of your loop completely, but I definitely think subtract() is more appropriate here t...

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When using assignin in subfunction A to create a variable in the workspace of subfunction B, the variable is being overwritten by a MATLAB built-in function with the same name
The real solution is this, function output = test_beta(input) output = test_beta2(input); end function beta=test_beta2...

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Non-linear scaling for linear increase in complexity
It is because you are applying property validations {mustBeFloat, mustBeNonnegative} on the x property. This means that in every...

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Question

Numeric vector indexing slows down when the vector is a struct field. Why?
In the speed comparision below, the only difference between Version 1 and Version 2 is that the vector being updated is the fiel...

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how to read in a curved region of interest that is one plane?
I don't quite understand what you are trying to do, but I have the vague impression you are trying to interpolate an image on a ...

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What coordinate system does regionprops assume for orientation angle?
You can still view the Orientation properties coordinate system as x-right, y-down, z-into-screen. However, the direction of pos...

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Which dimension(s) does trainingOptions shuffle apply to?
You can use analyzeNetwork to see which dimension is the batch dimension.However, I believe it will always be the last dimension...

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finding partial solutions from ill-conditioned equations
If you know which x(i) are well-determined, you could use lsqminnorm. In this example, we know that only x(1:2) are well-determi...

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Optimization method based on the Nonlinear least squares as well as fmincon for the defined objective function (Non-linear function).
The goal is to use some inverse method to get the same 3D datasets; therefore, after defining the objective function, I applied ...

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I am encountering a persistent error with the predict function in the Deep Learning Toolbox within MATLAB 2024b.
You need, testDlarray = dlarray(randn(inputSize,1), 'CB'); or, testDlarray = dlarray(randn(1, inputSize), 'BC');

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I have a N*N matrix depicting the intensities at different points in a circular plane. They are different intensities on a disc. How to plot the image?
clc, close all force N = 10; % Number of polar samples M = peaks(N); % Example heat map data T = linspace(0, 2*pi, N)'; %...

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Parpool in Pattern search with temp directories
The process continous but i get these warnings:Warning: Unable to create a parallel pool. Continuing with evaluations in serial....

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