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Matt J


Last seen: 1 day ago Active since 2010

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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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Answered
How to draw the axis in the origin of the coordinate system?
Use export_fig instead, https://www.mathworks.com/matlabcentral/fileexchange/23629-export_fig

12 hours ago | 0

Answered
Restore data format from SCB to SSCB after patch embedding
One way is to use a functionLayer.

13 hours ago | 0

Answered
Error forming mini-batch for network input
This is not enough to reproduce the error. You haven't provided input images. My guess, however, is that there are some files in...

24 hours ago | 1

Answered
Having 'imdilate' function only proceed when there are not a bunch of zero values
Don't use a loop. Use imreconstruct instead

1 day ago | 0

Answered
How do I find if a point is within the volume of a rotated ellipsoid
Download AxelRot from here, https://www.mathworks.com/matlabcentral/fileexchange/30864-3d-rotation-about-shifted-axis?s_tid=src...

1 day ago | 0

Question


Resetting a memoized function
I know that clearCache will clear the cache of a MemoizedFunction, but how would you reset its other properties to their default...

6 days ago | 2 answers | 0

2

answers

Answered
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...

10 days ago | 0

| accepted

Answered
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...

10 days ago | 1

| accepted

Answered
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...

11 days ago | 0

Answered
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 ...

12 days ago | 0

Question


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()...

15 days ago | 1 answer | 0

1

answer

Answered
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.

16 days ago | 0

Answered
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 ...

19 days ago | 0

Answered
Adding a dropdown box for the variable unit BESIDE the variable
Sure. For example,

19 days ago | 0

| accepted

Question


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...

20 days ago | 1 answer | 0

1

answer

Answered
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...

21 days ago | 0

Answered
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...

24 days ago | 0

| accepted

Answered
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.

26 days ago | 0

Answered
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...

27 days ago | 0

Answered
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.

28 days ago | 0

Answered
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...

1 month ago | 0

| accepted

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

1 month ago | 0

| accepted

Answered
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 ...

1 month ago | 0

Answered
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...

1 month ago | 1

| accepted

Answered
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...

1 month ago | 0

| accepted

Answered
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...

1 month ago | 0

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

1 month ago | 0

| accepted

Submitted


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...

1 month ago | 2 downloads |

0.0 / 5

Answered
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, ...

1 month ago | 0

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

2 months ago | 0

| accepted

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