Answered
Derivative of a multivariate function handle
Is this what you want? syms y [1 2] g = [y(1)*cos(y(2))+y(2)*sin(y(1))-0.5]; Jfun=matlabFunction(jacobian(g,y)) Jfun(0...

1 year ago | 0

Answered
Determine if a point is inside a cube
Assuming the cube is not rotated, vertices = [ -1, -1, -1; -1, -1, 1; -1, 1, -1; -1, 1, 1; 1, -1,...

1 year ago | 0

Answered
How to use splitapply function with a grouping variable which is a cell array in my table?
groupingVar = {'A', 'X'; 'A', 'Y'; 'B', 'X'; 'B', 'Y'; 'A', 'X'; 'A', 'Y'; 'B', 'X'; 'B', 'Y'; 'A', 'X'; 'A', 'Y'}; G=findgro...

1 year ago | 0

Answered
find unique array cell with 2 field
>> findgroups(f(:,1),f(:,2)) ans = 1 1 3 2

1 year ago | 0

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Answered
Question regarding calling the destructor of a broadcast variable in parfor.
It is because you have 6 workers in your parpool. Therefore, a copy of Mage is sent to each worker, for a total of 6, during par...

1 year ago | 0

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Answered
find unique array cell with 2 field
load('matlab_f.mat') table2cell(unique(cell2table(f),'rows'))

1 year ago | 0

Answered
Problem with ploting involving function handle
Perhaps this is what you meant? N= 600; COMx_k = @(k) real(sum(1.*exp(-2*pi*1i*(k/N).*(1:N)' ),1)); %k=0:0.1:300 fplo...

1 year ago | 0

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Answered
how to change the image from axial to sagittal
imtool3D() is not a native Matlab function, but I imagine if you permute your data permute(data,[3,1,2]) so that its slices are ...

1 year ago | 0

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Answered
How to add an NVCC flag
Downgrade to Visual Studio 2019. See also, https://www.mathworks.com/matlabcentral/answers/2158705-mexcuda-can-t-find-visual-st...

1 year ago | 0

Answered
starting vector (zero vector) equals lower bounds but gets projected to non-zero vector
This behavior is specific to the interior-point algorithm. As the name suggests, an interior-point algorithm must start at an in...

1 year ago | 1

Answered
Finding concave hull around abstract shape
ps = load('matlab_answer_example.mat').new_polyShape1; tic; V=cell2mat(arrayfun(@(i) upsamp(polybuffer(ps,-i)),[0,1],'Unifor...

1 year ago | 1

Question

mexcuda() can't find Visual Studio 2022, but mex() can.
In R2024a, I encounter the following when trying to compile with mexcuda in conjunction with Visual Studio 2022. >> mexcuda -la...

1 year ago | 1 answer | 0

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answer

Answered
loading and training an existing network.
previous = load("savednet","net","layers"); net = trainNetwork(data,clabels,previous.net,options);

1 year ago | 0

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Answered
Interpolate and plot a surface in a rotated coordinated system
I'm not familiar with the FEX submission you used, but I can show how I would do it with this one, https://www.mathworks.com/ma...

1 year ago | 0

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Find the indices of numbers that occur first
You won't be able to do better than a for-loop over the V(i).

1 year ago | 0

Answered
scale/normalize parameter vector for optimization
The transformation is non-differentiable, and probably is not a good idea for Optimization Toolbox optimizers which are smooth ...

1 year ago | 0

Answered
I have shifted from lsqnoneg to lsqlin because lsqnonneg does not support additional constraint is it right or wrong choice?
If your lsqlin can solve your problem, then there is usually never any reason to use lsqnonneg. lsqnonneg is for nonlinear least...

1 year ago | 0

Answered
Why is my hamming window and rectangular window values the same for sigma_omega when I make L = 21?
% Set window length L = 21 L = 21; % Generate rectangular and Hamming windows rect_window = window(@rectwin, L); hamming_w...

1 year ago | 0

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Answered
How to identify Gaussian type maxima in an image
using imregionalmax i can generate a list of candidate. I wanna check each one now. I may like to filter the one which are non s...

1 year ago | 0

Answered
transform linear inequality constraints into bound constraints for optimization solvers
Yes, a set A*y>=0 is a cone and so can equivalently be expressed as where are the so-called extreme rays of the cone and are ...

1 year ago | 0

Answered
Cannot define a cell array of custom classes in function argument validation
classdef Session < handle %SESSION Summary of this class goes here % Detailed explanation goes here properties (Acc...

1 year ago | 1

Answered
How to convert two nested for-loops to one parfor loop.
It does not seem advisable to use parfor. Everything in your code is vectorizable. However, here is what a parfor approach could...

1 year ago | 0

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Answered
Why can't we define properties on enumerations extending from built-in classes?
I don't know why. I suspect it is for the same reason why builtin indexing and concatenation no longer works when you add proper...

1 year ago | 0

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Answered
Why did CD folder; give such a goofy error message when I just forgot ()
Because cd apploc is equivalent to, cd('apploc') This is a general thing in Matlab function-calling syntax. For any functio...

1 year ago | 1

Answered
moving median with variable window
Anyway, I will be very happy for any hint how to apply robust median filter on my use case, where separate parts of signal shoud...

1 year ago | 0

Answered
moving median with variable window
x = rand(1,6) k = [2,3,3,5,3,2]; n=numel(x); J=repelem(1:n,k); I0=1:numel(J); splitMean=@(vals,G) (accumarray(G(:),vals...

1 year ago | 0

Answered
Minimum CUDA driver version which works with R2024a
The driver version you need is a function of your GPU card. Why not just install the latest one as the error message suggests? ...

1 year ago | 2

Answered
Moving window percentile computation using Conv
See ordfilt2.

1 year ago | 0

Answered
Modifying arrow length based on intersection with polygon
An alternative to Mike's approach using linexlines2D() from the File Exchange, https://www.mathworks.com/matlabcentral/fileexch...

1 year ago | 1

Answered
Should table Indexing be Faster?
I haven't profiled it, but I would bet that the following line, from @tabular/braceReference b = t.extractData(varIndices); is...

1 year ago | 1

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