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Matt J


Last seen: Today 2010 年からアクティブ

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Professional Interests: medical image processing, optimization algorithms PLEASE NOTE: I do not read email sent through my author page. Please post questions about FEX submissions in their respective Comments section.

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回答済み
Deconvolution using FFT - a classical problem
Since you are trying to deconvolve in the presence of noise, it would make sense to use a regularized deconvolver like deconvreg...

4日 前 | 0

回答済み
Morphological Image Processing: Object Identification and Separation
This might be along the lines of what you're looking for. It's semi-empirical though in the way it discards particles. Maximum d...

4日 前 | 1

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回答済み
Deconvolution using FFT - a classical problem
dt=0.001; N=20/dt; t= ( (0:N-1)-ceil((N-1)/2) )*dt; %t-axis u=(t>=0); g=3*exp(-t).*u; y=conv(g,u,'same')*dt; Y = fft...

5日 前 | 0

回答済み
How do I start using MATLAB Copilot?
The Matlab AI Co-pilot is an add-on product. It will not be part of your Matlab installation unless you've bought a license for ...

6日 前 | 0

質問


Parsing mfunctions with mtree
Given an Nx1 colum vector of strings containing lines of mfunction code, it is possible to use the undocumented function mtree()...

9日 前 | 1 件の回答 | 0

1

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Where is the Save icon (not Save As) in a figure (.fig) R2025b Matlab
There is no separate Save icon applicable to figures. I think only the Editor has ever had that.

9日 前 | 0

回答済み
Determine which delaunayTriangulation Constraints correspond to input constraints?
If you convert the final triangulation to a graph, then it seems to me that shortestpath should give you the intermediate nodes ...

12日 前 | 0

回答済み
Adding a dropdown box for the variable unit BESIDE the variable
Sure. For example,

13日 前 | 0

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質問


Appdesigner labels linked to components
It appears to me that text labels in AppDesigner canvases have two types: labels that are standalone, independent of any compo...

14日 前 | 1 件の回答 | 0

1

回答

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Pass commands to executable run through system command
Perhaps as follows? In1 = '1'; In2 = 'C:/Dir1/File1.dat'; In3 = '02/09/2026 16:00'; In4 = '0.5'; cmd = sprintf('C:/Dir2/m...

15日 前 | 0

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When I use nlinfit, the sintax nlinfit(t0,p0 ,@(b,t) ...),but if Ireplace nlinfit with fmincon, the sintax is not valid, why?
Because it is a different function. The syntax of fmincon is documented here, https://www.mathworks.com/help/optim/ug/fmincon.h...

17日 前 | 0

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回答済み
does installing toolbox that has different version than your matlab program cause a problem
Yes. I don't think it's even possible to install a toolbox version that doesn't match your core Matlab version.

20日 前 | 0

回答済み
Why is the menu bar background white?
You could also upgrade to R2025. There, the menu bar is grey (or at least not as white) and you can also render figures in da...

21日 前 | 0

回答済み
Why is the menu bar background white?
especially when you develop a code with a GUI For GUIs, you can use uimenu, which still produces a grey menu bar.

22日 前 | 0

回答済み
Calculate mean and standard deviation from 30-years of global wind data
This might be what you are looking for, subs=[lat(:),lon(:),year(:)]; val=wind(:); siz=[180,360,30]; meanWind = acummarray...

28日 前 | 0

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回答済み
Install and work with ResNet-50 Network pretrained
Install by opening deepNetworkDesigner and selecting ResNet-50 You can then use imagePretrainedNetw...

28日 前 | 0

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回答済み
Trying to normalize a matrix across all element values.
Normalize across only non-zero elements, or across elements only in the upper triangle? If the latter, then, A=[ 0 54 0 ...

28日 前 | 0

回答済み
Issue with Blockproc when using PadPartialBlocks
Integer types cannot hold NaN values, so you will have to convert your int8 input to floating point: load('ImgForBlockProcQ...

28日 前 | 1

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回答済み
Why does specifying the size of a class property slow down writes?
The property validation specifications have to be processed every time you make an assignment to the buffer property. This takes...

29日 前 | 0

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回答済み
Issue with Blockproc when using PadPartialBlocks
what am I doing wrong? Nothing you've shown us currently. The border values will/should be NaNs as you expect. J = blockproc(r...

29日 前 | 0

回答済み
Suppress real part of complex number for cleaner display
ys_abc = inv(zs_abc) str = formattedDisplayText(imag(ys_abc) +"i"); disp( erase(str ,'"') )

約1ヶ月 前 | 0

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Customized text modification buttons for the Matlab Editor
A pair of functions enabling simple, programmatic modification of Matlab Editor text. These can be used to make customized butto...

約1ヶ月 前 | ダウンロード 2 件 |

0.0 / 5

回答済み
Transition point discontinuity (cliff/spike) in plots of solved system of non linear equations.
I find it strange that you are using fsolve for a 1-variable problem, rather than fzero. You don't show the objective function, ...

約1ヶ月 前 | 0

回答済み
Create help for method with arguments
The Quick Access Toolbar function favoriteArgs2Help.m, now available in this FEX submission, https://www.mathworks.com/matlabce...

約1ヶ月 前 | 0

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回答済み
splitapply does not retain ME stack
Run with Pause on Errors. Then the code will stop at the offending line:

約1ヶ月 前 | 0

回答済み
Effect of GA Parameters on Convergence
You need to look at the final fval achieved as a function of N. If the irregular solutions have a lower fval than the regular so...

約1ヶ月 前 | 0

回答済み
How to change the size / ratio of a figure
Perhaps as follows? axis tight dx=diff(xlim); dy=diff(ylim); xmax=dy/(9/11)/2; xlim([-xmax,+xmax])

約1ヶ月 前 | 0

回答済み
solving a system of linear equations where A is a 40*40 sparse matrix
You should use \. It's not just about precision, though. It's also about speed: A=sprand(400,400,0.2)+speye(400); b=rand(400,1...

約1ヶ月 前 | 1

回答済み
Is the Order of Function Evaluation Guaranteed when Function Outputs are Concatenated into an an Array?
This reasoning might not be bulletproof, but I think the order of funtion calls in any expression has to always go left to right...

約2ヶ月 前 | 0

回答済み
Calculating 6D Estimation (3 Translations and 3 Rotations) from Two Orthogonal Detectors Output ((X, Y, Thea, Roll)
Spreaking for myself, the provided Fig1.png does not help me understand how a 6DOF 3D pose maps to a 4DOF projected pose (X, Y, ...

約2ヶ月 前 | 0

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