photo

Matt J


Last seen: Today Active since 2010

Followers: 16   Following: 0

Message

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.

Statistics

All
MATLAB Answers

296 Questions
12 329 Answers

File Exchange

38 Files

Cody

5 Problems
33 Solutions

Discussions

8 Discussions

RANK
6
of 300 744

REPUTATION
32 130

CONTRIBUTIONS
296 Questions
12 329 Answers

ANSWER ACCEPTANCE
79.05%

VOTES RECEIVED
4 273

RANK
201 of 21 054

REPUTATION
6 734

AVERAGE RATING
4.90

CONTRIBUTIONS
38 Files

DOWNLOADS
132

ALL TIME DOWNLOADS
55548

RANK
10 715
of 170 597

CONTRIBUTIONS
5 Problems
33 Solutions

SCORE
598

NUMBER OF BADGES
7

CONTRIBUTIONS
0 Posts

CONTRIBUTIONS
0 Public Channels

AVERAGE RATING

CONTRIBUTIONS
8 Discussions

AVERAGE NO. OF LIKES
3

  • Most Accepted 2024
  • Most Accepted 2023
  • Speed Demon
  • Creator
  • Editor's Pick
  • Personal Best Downloads Level 4
  • Community Group Solver
  • Commenter
  • Promoter
  • Leader
  • Solver
  • Most Accepted 2022

View badges

Feeds

Answered
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...

ungefär 11 timmar ago | 1

| accepted

Answered
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...

ungefär 14 timmar ago | 0

Answered
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...

2 dagar ago | 0

Answered
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...

3 dagar ago | 0

Answered
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...

5 dagar ago | 0

| accepted

Answered
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...

5 dagar ago | 0

Answered
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...

7 dagar ago | 0

| accepted

Answered
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 ...

7 dagar ago | 0

| accepted

Answered
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...

7 dagar ago | 0

| accepted

Answered
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). ...

8 dagar ago | 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)]; ...

11 dagar ago | 3 answers | 0

3

answers

Question


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...

14 dagar ago | 1 answer | 0

1

answer

Answered
confidence interval from lsqnonlin function while retaining constraints
After solving the original problem, initialguess = [3,25.5013,0.5,-0.8793]; %[n,tau(fs),m,c] options = optimoptions('lsqnonlin...

15 dagar ago | 0

Question


Pinning the AxesToolbar (revisited)
The AxesToolbar was introduced about 6 years ago, However, I never embraced it, because it wa...

15 dagar ago | 1 answer | 3

1

answer

Answered
How can I move the find & replace window or get it to automatically close
If you widen the Editor window sufficiently, the Find and Replace window will move to the right into a blank area where it will ...

16 dagar ago | 0

| accepted

Question


Mixing subscripts with linear indices
Generally speaking, I have found that it has always been possible to mix subscript and linear array indexing, as long as the ind...

17 dagar ago | 1 answer | 1

1

answer

Answered
effects of ifft2(x, 'symmetric') while x is not conjugate symmetric
When you specify "symmetric", the upper half of the fft input array is ignored, e.g. x=ones(1,7); ifft(x) x(5:end)=rand(1...

23 dagar ago | 1

| accepted

Answered
The single function is not behaving as expected
No, it is not a bug. The precision of a number isn't something that is measured only by the digits to the right of the decimal p...

25 dagar ago | 3

| accepted

Answered
Integer conversion without precision loss for literal function inputs
test 7725400999518902274 function test(a) arguments a (1,:) string end a=eval("uint64("+ a + ")"), end

26 dagar ago | 1

| accepted

Answered
FFT problem: FFT -> some manipulation -> IFFT results in one-element shift
I think the line where I define my frequency: f= ((-length(fourierNoise)/2):((length(fourierNoise)/2)-1))*fs/length(fourierNois...

27 dagar ago | 0

Answered
Free boundary of a tetrahedral mesh has interior-crossing edges
OK, my bad. The solid was built from smaller, triangular sub-prisms, each subsequently split into tetrahedrons. While neighborin...

27 dagar ago | 0

| accepted

Answered
Can we specify or make uigetfile() remember its window position or view mode/sorting?
This file exchange submission seems to do most of the above, https://www.mathworks.com/matlabcentral/fileexchange/10867-uipickf...

28 dagar ago | 0

Answered
Table with multiple types
I guess I might be missing something. Why isn't this what you want? PType='R'; PData=uint32(391); fig = uifigure; uit = ui...

28 dagar ago | 0

Answered
How to move data tip in R2025b? (Or, how to restore legacy data tip behavior)
Another option is to supply your own datatip, with an UpdateFcn defined by you: function datatipDemo() % Minimal example that ...

28 dagar ago | 0

| accepted

Answered
How to move data tip in R2025b? (Or, how to restore legacy data tip behavior)
You can activate the old-style figure toolbar exploration buttons, e.g., addToolbarExplorationButtons(gcf) That seems to have ...

29 dagar ago | 0

Answered
Error using assignin in a nested m function
Assignin is something you should generally try to avoid. It has many hazards. In this case, where myfunction is nested in mywo...

ungefär en månad ago | 1

Question


Migrate R2025a preferences to a new computer that is running R2025b
I am installing R2025b Matlab on a new computer. The new computer has no prior Matlab installations from which previous preferen...

ungefär en månad ago | 1 answer | 1

1

answer

Question


As of R2025ab, are all figures now uifigures?
Prior to R2025, the result of the code below was tf=0. Have the figure and uifigure frameworks been unified somehow? Is that why...

ungefär en månad ago | 1 answer | 1

1

answer

Answered
Imtile resolution changes with figure height
So Ive noticed when y figure is 1500 x 600, the images look a lot better than when the figure is only 300 high - even though wit...

ungefär en månad ago | 0

| accepted

Answered
Where did the zoom icon and other tools go in Release 2025b?
In the version I had installed previously, there was a "zoom" button shaped like a small magnifying glass in a toolbar along wit...

ungefär en månad ago | 1

| accepted

Load more