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Question
Performance of MEX versus builtin functions
When Matlab calls a MEX file, is there overhead that makes the call slower as compared to a built-in binary like min, max, etc.....
environ 16 heures il y a | 1 réponse | 0
0
réponsePutting spaces between elements of a string/
A=['011001110000' '101111000000' '110100011000' '011010001100' '010101000110' '110010100010' '1000010100...
1 jour il y a | 1
Implicit expansion with arrayfun (cpu vs gpu)
Remember that arrayfun (on the CPU) is nothing more than an M-Code for-loop in disguise. Therefore, it is not hard to write your...
2 jours il y a | 1
| A accepté
Implicit expansion with arrayfun (cpu vs gpu)
I agree it is confusing, but the gpuArray version of arrayfun was never intended as a direct analgoue of the CPU version. Additi...
2 jours il y a | 0
How to prevent image cropping after registration?
The problem is my fixed image only covers the top half of the head whereas I want the output to contain the whole head. But th...
4 jours il y a | 0
Question
Adding a class-related function to appdesigner app
Is there a way, in appdesigner, to create a class-related function, i.e., a function that is local to the app's classdef file, b...
5 jours il y a | 1 réponse | 0
1
réponseCut, Copy, Paste icons missing
Looks like they've been removed in R2025. However, you can easily program and install your own cut/copy/paste buttons on the Qui...
6 jours il y a | 0
Adding multiple function plots to a single figure with subplots - MATLAB
This might be what you want: Manipulators={manipulator1,manipulator2,manipulator3}; m=3;n=2; %tiling dimensions %create h...
7 jours il y a | 0
Construct voronoi diagram on a point cloud
Using the attached file and this FEX download https://www.mathworks.com/matlabcentral/fileexchange/30892-analyze-n-dimensional...
8 jours il y a | 0
How to generate orthogonal X-ray Projection, Digitally Reconstructed Radiographs (DRR), from a particular CT volume
This is a popular Matlab compatible library, https://github.com/CERN/TIGRE/blob/master/Frontispiece/MATLAB_installation.md It...
9 jours il y a | 0
| A accepté
How to move a 3D volume in 6D (3 Translations and 3 Rotations)
I defined a function called "applyRigidTransform3D" in code 1 and "rigidTransform6D" in code 2 for the 6D movements It shouldn'...
12 jours il y a | 0
| A accepté
The surface I'm plotting comes out jagged and "saw teeth" like
It's a very coarsely sampled surface. There's not really any more to it. You can bicubicly upsample the data if you want a smoot...
13 jours il y a | 0
| A accepté
How to draw line in viewer3d ?
You could use images.ui.graphics.Surface to create a very thin cylinder, could you not?
18 jours il y a | 0
| A accepté
Inverse problem, Overdetermined, Nonlinear
You would use fsolve or, if you want specific constraints on the unknowns, e.g., bounds, you would use lsqnonlin. You could al...
18 jours il y a | 0
2D-3D image registration - COMPLETE 6D ESTIMATION
I haven't read the paper, but I don't see how the proposed method would ever work as you describe it. 6D motion simply does not ...
19 jours il y a | 0
Fitting to exp plus a constant
It looks like the fit was successful, but the model function is overparametrized, so there is no specific value for a (or c) tha...
20 jours il y a | 0
Showing the value on the x-axis as a legend the moment the curve deviates from the x-axis
Something like this, perhaps: Hlines=plot(1:5, max(0,-2:2), 1:5, max(0,-1:3)); axis padded h=arrayfun(@addIt,Hlines); leg=l...
20 jours il y a | 0
camera intrinsics calibration produces wild out-of-range principalPoint
You haven't provided data with which to repeat the calibration, so one can only guess. But if reconstruction error is low, the p...
21 jours il y a | 0
How can you save a 1 by 3 array in each position of a 4D array?
I would like to only have one 4D array, with each coordinate housing a 1x3 with all 3 data points needed. Is this possible? You...
22 jours il y a | 1
| A accepté
How to fit a set of data where one of the fitting parameters decays exponentially?
Why not just replace Γ_cav in your model equation by a parametrized exponential, e.g., Γ_cav=a*exp(b*x) where a and b are ne...
22 jours il y a | 0
Is image normalization performed when using "trainnet" for semantic segmentation training?
If your network has an imageInputLayer with the Normalization parameter set to do so, https://www.mathworks.com/help/deeplearni...
23 jours il y a | 0
The calibrator app says the patterns are "too similar" even if they are not
Your cam2 images are of poor quality. Corner detection done in isolation fails pretty badly for some of them (see below). Did yo...
24 jours il y a | 0
Plots have small titles
I also think that it is small in the figure viewer. I haven't noticed any changes in the figure viewer. However, you can set th...
26 jours il y a | 0
| A accepté
the dimension of matrix when using 'sparse' to generate sparse matrix
With a slight reimplementation of tril3d, the test code seems to work: % test spblkdiag tril ndSparse z1=rand(8,8,20); z2=t...
26 jours il y a | 0
How to get legend entries from existing figure ?
The legend's String property will get you the legend labels for the different lines, e.g., plot(rand(5,3)); L=legend; L.Stri...
28 jours il y a | 0
| A accepté
App Designer component generated by code not displaying
It is conspicuous to me that you are complaining about missing labels, but not about the missing uipanel!. Did you pre-populate ...
28 jours il y a | 0
| A accepté
What is causing this intermittent error in parfor?
If you add the indicated line, your class constructor will support no-argument calls, and the error will go away: funct...
28 jours il y a | 0
| A accepté
Defining inequality constraint A*x <= b for genetic algorithm
You should be able to vectorize the computations in your self-intersection checker (within your nonlinear constraint function). ...
29 jours il y a | 0
Question
Why does fprintf attach a negative sign to a zero?
Here is some code to set up the demonstration, load data fid = fopen('runsim.py','w'); rotation=[0,0,-GantryAngles(1)]; ...
environ un mois il y a | 3 réponses | 0
3
réponsesQuestion
Closing the Property Inspector in R2025b
The Property Inspector pane does not appear to have a 'Close' button in R2025b, nor does its sidebar icon appear to have a dropd...
environ un mois il y a | 1 réponse | 0
