photo

Matt J


Last seen: Today Aktiv seit 2010

Followers: 16   Following: 0

Nachricht

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.

Statistik

All
MATLAB Answers

297 Fragen
12.344 Antworten

File Exchange

38 Dateien

Cody

5 Probleme
33 Lösungen

Discussions

8 Discussions

RANG
6
of 300.788

REPUTATION
32.152

BEITRÄGE
297 Fragen
12.344 Antworten

ANTWORTZUSTIMMUNG
78.79%

ERHALTENE STIMMEN
4.274

RANG
201 of 21.091

REPUTATION
6.736

DURCHSCHNITTLICHE BEWERTUNG
4.90

BEITRÄGE
38 Dateien

DOWNLOADS
131

ALL TIME DOWNLOADS
55573

RANG
10.813
of 171.083

BEITRÄGE
5 Probleme
33 Lösungen

PUNKTESTAND
598

ANZAHL DER ABZEICHEN
7

BEITRÄGE
0 Beiträge

BEITRÄGE
0 Öffentlich Kanäle

DURCHSCHNITTLICHE BEWERTUNG

BEITRÄGE
8 Discussions

DURCHSCHNITTLICHE ANZAHL DER 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

Abzeichen anzeigen

Feeds

Beantwortet
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...

etwa 3 Stunden vor | 0

Beantwortet
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...

etwa 5 Stunden vor | 0

Beantwortet
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...

2 Tage vor | 0

Frage


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...

2 Tage vor | 1 Antwort | 0

1

Antwort

Beantwortet
Cut, 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...

4 Tage vor | 0

Beantwortet
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...

5 Tage vor | 0

Beantwortet
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...

6 Tage vor | 0

Beantwortet
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...

7 Tage vor | 0

| akzeptiert

Beantwortet
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'...

10 Tage vor | 0

| akzeptiert

Beantwortet
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...

11 Tage vor | 0

Beantwortet
How to draw line in viewer3d ?
You could use images.ui.graphics.Surface to create a very thin cylinder, could you not?

16 Tage vor | 0

| akzeptiert

Beantwortet
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...

16 Tage vor | 0

Beantwortet
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 ...

17 Tage vor | 0

Beantwortet
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...

18 Tage vor | 0

Beantwortet
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...

18 Tage vor | 0

Beantwortet
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...

19 Tage vor | 0

Beantwortet
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...

19 Tage vor | 1

| akzeptiert

Beantwortet
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...

20 Tage vor | 0

Beantwortet
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...

21 Tage vor | 0

Beantwortet
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...

22 Tage vor | 0

Beantwortet
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...

24 Tage vor | 0

| akzeptiert

Beantwortet
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...

24 Tage vor | 0

Beantwortet
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...

26 Tage vor | 0

| akzeptiert

Beantwortet
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 ...

26 Tage vor | 0

| akzeptiert

Beantwortet
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...

26 Tage vor | 0

| akzeptiert

Beantwortet
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). ...

27 Tage vor | 0

Frage


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)]; ...

etwa ein Monat vor | 3 Antworten | 0

3

Antworten

Frage


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...

etwa ein Monat vor | 1 Antwort | 0

1

Antwort

Beantwortet
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...

etwa ein Monat vor | 0

Frage


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

etwa ein Monat vor | 1 Antwort | 3

1

Antwort

Mehr laden