Answered
How to obtain all permutations of multiple cell arrays?
This is better because the for loop is only 6 iterations long. A={'a1'; 'a2'; 'a3'}; B={'b1'; 'b2'}; C={'c1'; 'c2'; 'c3'; 'c4...

1 month ago | 0

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Answered
Vectors must be the same length
i = gradient(q(:, 1),t); % Current derivative U_R = R * i; % Resistor's voltage U_L = L * gradient(i,t); ...

1 month ago | 1

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Answered
affine3d used for pure rotation causes translational misalignment
I don't really understand how your posted images show that something is wrong. It shows that the image has changed after the war...

1 month ago | 0

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Answered
Non linear fit extremely bad : what am I doing wrong ?
There are ways to derive an accurate x0 more systematically, e.g., rng('default') t = 0:0.02:10; x = t.*sin(2*pi*1*t) + 0.1*ra...

1 month ago | 0

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Answered
How to avoid counting elements in each row of matrix multiple times?
Xedges=linspace(Xmin,Xmax, Nbin+1); Yedges=linspace(Ymin,Ymax, Nbin+1); N=0; for i=1:height(X) deltaN = histcounts...

1 month ago | 0

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How to put different size vectors to one matrix or mat file?
To save to a .mat file save filename d1 d2 d3 d4 To retrieve them, packaged in a struct variable, S=load('filename'); To wri...

1 month ago | 1

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Answered
finding the value of a corresponding column in matrix
models = A(A(:,1)==40,2)

1 month ago | 0

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Answered
lsqcurvefit answer upon termination?
You can use a nested OutputFcn, like in this example, https://www.mathworks.com/help/matlab/math/output-functions.html#bsgpq6q-...

1 month ago | 0

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Answered
Newton Raphson gives answers divided by 0
Raw Newton-Raphson is a pretty terrible method, but I assume you'll tell us you have no choice... [f,M]=preanalysis(); %Symbo...

1 month ago | 0

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Adding elements to matrix
A=[1 2 3 4 5 6 7 8 9 10] B=[reshape(A,2,[]); zeros(1,numel(A)/2)]; B=[0,B(:)'] %the result

1 month ago | 1

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Answered
What does MATLAB actually do when switching precisions?
I don't know Julia, but I don't believe the binary decomposition was done correctly. Below is the way to do the binary decomposi...

1 month ago | 2

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lines that meet each other
You can use, https://www.mathworks.com/matlabcentral/fileexchange/93470-intersections-of-multiple-2d-lines-or-line-segments

1 month ago | 0

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How to compute integrals on the GPU using trapz function
You cannot use trapz within gpuArray.arrayfun, but I don't think you really need it. On my computer, the following takes about 3...

2 months ago | 0

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Answered
augmentedImageDatastore for image segmentation
Supply the training data in numeric form: X_training = rand([224 224 3 200]) ; %Fake Y_training = rand([224 224 1 200]) ; %Fak...

2 months ago | 1

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Answered
Interpolation to arbitrary points on a patch plot
For example, F=scatteredInterpolant(msh_1.xy, q); interpolatedValues = F({[0.68,1.87],0:0.2:1})

2 months ago | 0

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When eigs uses a custom function as input, it cannot compute an eigenvalue near a specified sigma
n = 10; A = randn(n); A = A + A'; E1=eigs(A,5,'sa')'; sigma = E1(2)+1; E2=eigs(A,5,sigma)'; E3 = eigs(@(x) (A-s...

2 months ago | 0

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solving quadratic roots in matlab
Hint: You should consider applying the quadratic formula.

2 months ago | 0

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how to create image data store? I do not have clarity regarding the arguments in ImageDataStore as studied from the website
Matlab does not understand (and neither do we) how a single "test1.tif" is supposed to specify labels for all of your images. Th...

2 months ago | 0

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Running into issue using fsolve
There are no errors in what you've shown, but it is peculiar that you have one optimization (with fsolve) nested inside another ...

2 months ago | 0

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Answered
How to ask Matlab ga to continously regenerate individuals until they all satisfy user defined constraints prior to fitness evaluation
The way to handle that is to have the fitness function skip the FE modeling and return Inf (or some large penalizing value) if t...

2 months ago | 0

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Answered
Efficiently handling extremely large matrices (N x N) in MATLAB (e.g., N = 137 million)
Could you provide examples of using sparse matrices You give us wide latitude on what the example can be be, so here is one: A...

2 months ago | 0

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Fast dataset manipulation in MATLAB
The implementation that you wrote first, R = [cos(theta) -sin(theta); sin(theta) cos(theta)]; bary = R' * (y - p); is alre...

2 months ago | 1

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Answered
Expanding a cell array in table into multiple rows
Here's a scaled-down example: T=table(1,2,3,{rand(4,3)}, {rand(4,1)}); T.Properties.VariableNames(end-1:end)=["A","B"] n=...

2 months ago | 0

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Answered
Camera calibrator (picture capture)
Yes, for single camera calibration, it shouldn't matter whether the camera or the pattern (or both) are moving, as long as you d...

2 months ago | 0

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User Defined Functions in MATLAB
prodby2_kweave19(6) function product = prodby2_kweave19(N) product = prod(1:2:N); % User inputs N, as the argument to the...

2 months ago | 0

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Answered
Increasing lsqcurvefit/nlinfit speed
It would definitely be faster to attach the table as an external variable to an anonymous or nested function, than to freshly lo...

2 months ago | 0

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Answered
How to interpolate one axis in a 3D data?
load dats; F=griddedInterpolant(ss); ss=F({1:139,1:48, linspace(1,9,100)});

2 months ago | 0

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Answered
Using lsqnonneg to determine if there exists a solution to a (generally) under-determined linear system, but error is too large to be convincing.
A better way to investigate the existence of a solution to Aeq*x=beq, x>=0 might be (as below) to find the minimum distance betw...

2 months ago | 0

Answered
Using lsqnonneg to determine if there exists a solution to a (generally) under-determined linear system, but error is too large to be convincing.
There is nothing that can be inferred from the resnorm alone about the quality of the solution. 10^-3 is a very good result if t...

2 months ago | 0

Answered
Creating multiple cylinders in different coordinates
Using cylindricalFit() from this FEX download https://www.mathworks.com/matlabcentral/fileexchange/87584-object-oriented-tools-...

2 months ago | 0

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