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help with XYZ data file
This might be what you're looking for: zq=fspecial('gaussian',200,40); Nlevels=5; zRanges=linspace(min(zq(:)) ,max(zq(:))...
3 days ago | 0
help with XYZ data file
First question, I would like to be able to plot some of the planes of XY with fixed Z values/range. The terminology "planes of...
4 days ago | 0
Submitted
Quadratic minimization with norm constraint
Minimizes convex or non-convex quadratics subject to (in)equality constraint on norm(x)
4 days ago | 3 downloads |
How to find a rotation vector for use in rotate, if the rotation matrix is rank deficient?
Probably easier to use hgtransform, which allows you to perform the rotation by specifying only the rotation matrix.
5 days ago | 0
Find specified number of points on curve with identical chord length (not arc length)
Here's an approach using fminbnd to minimize the attached cost function circleMarch(). t=linspace(0,200,1e4)'; %%% XY=[cosd...
7 days ago | 0
| accepted
How to use custom YOLO models in MATLAB?
If you have the Deep Learning Toolbox, you can use minibatchpredict.
7 days ago | 1
How to remove unwanted double image in plot
It is possible your points are not sorted in ascending order of x.
7 days ago | 0
| accepted
How can you make multi-line axis labels with TeX not left-justified in R2026a?
Here's an attempt using the idea of separate text boxes that you mentioned. It wasn't too bad, although, it doesn't have the abi...
9 days ago | 0
How can you make multi-line axis labels with TeX not left-justified in R2026a?
xlabel({'normal'; '\textbf{bold}'}, ... 'Interpreter','latex')
9 days ago | 0
How to find a function in the path - securely?
Perhaps as follows? safeWhich('num2cell') safeWhich('varargin') safeWhich('R') safeWhich('p') safeWhich('queryName') ...
11 days ago | 1
| accepted
Colorbar with background image
You can use this as a template: % Create sample data [X,Y] = meshgrid(linspace(-3,3,200)); A = exp(-(X.^2 + Y.^2)); ...
11 days ago | 0
Only version 2026a appears available for download as a trial. I want version 2025b
If you Contact Sales, you might be able to arrange a trial version of your choice with them directly.
13 days ago | 0
How to use fft on the continuous time signal
Here is the proper way to set up the time and frequency sampling axes: tau = 1*10^-9; % tau %Set up frequency and time sampl...
14 days ago | 0
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textscatter example, and behavior, is mysterious
Here's an alternative, whose behavior you might like better: rng("default") n = 11; x = rand(n,1); y = rand(n,1); str = str...
14 days ago | 0
Can you get matlab to add a really small number to a big number and retain precision
From the quadratic formula, you can see that p is the right hand root of the quadratic equation, 0.5x^2 + 1e17x - 0.5e18 = 0 I...
15 days ago | 1
Why is Preallocating arrays important in MATLAB, and how does it improve performance compared to dynamically growing arrays?
When it is acceptable to avoid preallocation Looping backwards is an alternative to pre-allocating. You're not really "avoidin...
16 days ago | 0
Does dicomreadVolume automatically rescale the image?
You should manually apply it.
17 days ago | 0
| accepted
When plotting 3D graphs in MATLAB, can the x and y axis labels be made flush with the x-y plane, as shown in the figure below?
There are some File Exchange compositions that seem to be able to do it, e.g., https://www.mathworks.com/matlabcentral/fileexch...
21 days ago | 0
| accepted
How to add a shared ylabel on the right hand-side of a figure, when combining tiledlayout and yyaxis?
One way. t = tiledlayout(4,1); for i = 1:4 nexttile title("Tile"+i) yyaxis left plot(rand(1,10)) ...
23 days ago | 1
trainnet function - randomness and repeatability
In addition to random initialization of the Learnables, as mentioned by @Steven Lord, you are using the default Shuffle setting,...
24 days ago | 0
Eigendecomposition not fully utilizing all cores on M1 pro, matlab 2025b
Perhaps bundle the jobs together using pageeig?
25 days ago | 0
Use ginput in a datatip
There is imdistline, but it requires the Image Processing Toolbox.
27 days ago | 0
Given an observer looking to the center of an ellipsoid, how can I determine the distance through the ellipsoid if none of the axes are aligned with this look angle?
Given an observer looking to the center of an ellipsoid After converting to ECEF coordinates, xc=[xc1;xc2;xc3] ...
30 days ago | 0
How can I fit a curve with three independent variables in MATLAB R2024b?
lsqcurvefit from the Optimization Toolbox has no restriction on the number of independent variables (or on bounds), but you will...
1 month ago | 0
Matrix 10x10 with same number in each row by column.
M=repelem(1:10,10,1) M = ceil( reshape(1:100,10,10) /10 ) M = fft(1:10,10,1)
1 month ago | 0
How to use the nonlinear least square fitting to fit a transfer function？How to improve the fitting accuracy
Assuming the things @Catalytic pointed out above were mistakes, and also if Y is supposed to be the impulse response, then the f...
1 month ago | 0
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How to use the nonlinear least square fitting to fit a transfer function？How to improve the fitting accuracy
Your initial point, T0 = ones(10,1); %% intial values looks very arbitrary. You should devise a smarter initial guess. Aside...
1 month ago | 0
Discussion
Shouldn't max([])=-inf ?
Matlab seems to follow a rule that iterative reduction operators give appropriate non-empty values to empty inputs. Examples inc...
1 month ago | 0
Why Does polyval Return Zero When the Coefficients are Empty?
For non-empty A and B, we have the general relation, polyval([A,B],z)=polyval(A,z)*z^numel(B) + polyval(B,z) Extending this to...
1 month ago | 0
| accepted
"Index exceeds 37" when 35 variables?
The root cause, as I commented above, is probably that you've attempted to construct a fit type with 3 independent variables, wh...
1 month ago | 2
