Matt J

Last seen: Today | Active since 2009

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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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How to compute the intersection point of the indifference curve and the cml curve?
You've negelected to tell us what the independent variable is. If I assume it is Annu_rf, then one way would be, U=@(Annu_rf) A...

5 dagen ago | 0

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Answered
How do I use a .exe compiled with an app in app designer?
If you are using the deploytool app to compile, you can include analysis.exe via the section "Files required for your applicatio...

6 dagen ago | 0

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Answered
train neural net with prior solution
Your post is under-detailed and does not tell us how the network and training are implemented. If I assume you are using trainne...

6 dagen ago | 0

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Pause button not functioning
Try using waitfor instead, along with some sort of uicontrol, e.g., % Create the figure fig = figure; % Add a button to ind...

7 dagen ago | 0

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Why does converting categorical(0) to double add 1?
It doesn't add 1. It just enumerates your categories (in numerical or alphabetal order), e.g., double( categorical(["dog","cat"...

7 dagen ago | 0

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Converting 1x1 struct with multiple fields to numeric matrix
tieup.x1 = '2,3,6'; tieup.x2 = 3; tieup.x3 = 4; tieup.x4 = '1,4,5'; tieup.x5 = '1,2,3,6'; f=string(fieldnames(tieup))'; ...

7 dagen ago | 1

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How to resolve this error?
[y, e] = hFDAF(x, d);

7 dagen ago | 0

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How to find values in a nested struct with repeating fieldnames?
I think a loop in combination with the find function could do the trick, but this seems like an inefficient and error-prone way....

7 dagen ago | 0

Answered
multiply a matrix into every block matrix in a big matrix
Hc=[1,2;3,4]; A=kron(ones(3),eye(2)); %2x2 blocks Aij blockheight=2; result=reshape( Hc*reshape(A,blockheight,[]) , ...

8 dagen ago | 0

Answered
multiply a matrix into every block matrix in a big matrix
You can download this package, https://www.mathworks.com/matlabcentral/fileexchange/115340-block-transposition-permutation-and-...

8 dagen ago | 0

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Answered
Are there MATLAB functions or scripts to perform boolean operations on triangulated solids?
If you mean you want to take intersections and unions of meshes, then no, there are no MathWorks-authored commands to do that. H...

8 dagen ago | 0

Answered
How to save and load MATLAB app?
The app object contains handles to all the app's uicontrols, but your LoadConfigMenuSelected callback doesn't reference any of ...

8 dagen ago | 0

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How to get the Class Names from a dlNetwork?
After you've trained the model as a dlnetwork, there is nothing stopping you from converting it back to a traditional SeriesNetw...

9 dagen ago | 0

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Answered
handling data inside for loop
dataAllFiles4 = cell(2,length(csvFiles4)); dataIndex = 1 for k4 = 1:length(csvFiles4) % Get the full file name b...

10 dagen ago | 0

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Answered
Identifying Boundary Nodes in a Point Cloud
If the regions are supposed to be convex, you can use convhull or convhulln.

12 dagen ago | 0

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How to find the multiplication or division value of a matrix for each row and column in matlab
A.*B A./B

12 dagen ago | 0

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Answered
Overlay data points on image plot and only rotate image points not the image using imref2d
load B.mat; %load reverse imcomplement of image load x_world load y_world figure(1); theta = -90; %rotate image counterclock...

14 dagen ago | 0

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Answered
What is the correct way to save a large MATLAB structure?
but how can 56GB of "overhead" be considered acceptable? It depends on what your struct contains. Field data containing handle ...

14 dagen ago | 1

Answered
How to remove all NaN and Inf values when calculate the mean?
If you're saying you want to take the column-wise mean, ignoring zeros and non-finite values, then you could do, exclude = (Lo...

14 dagen ago | 0

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Answered
Can MATLAB do a 2-D FFT on a uniform parallelogram grid of measured points?
I need to Fourier Transform my parallelogram grid of measured values into ground freq domain, the Inv FT that into ground time d...

15 dagen ago | 0

Answered
How to find the point the graph crosses the x axis
x = @(t) (0.3) .* exp(-3 .*t) .* cos(4 .* t) + 0.2 .*exp(-3 .* t) .* sin(4 .* t); firstroot = fzero(x,[0,1]) %% graphs par...

16 dagen ago | 0

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Answered
After segmentation how to save number of subobejcts for each objects
If you mean you want to extract the sub-images forming the bounding box of each circle, then perhaps something like the followin...

16 dagen ago | 0

Answered
How to use fsolve to solve all the equations?
given too many results Perhaps you should use uniquetol, rather than unique.

17 dagen ago | 0

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Controlling aspect ratio for tiled layout
[epsilon, phi,omega]=deal(rand(10), rand(10), rand(10,1)); tiles = tiledlayout(1,3); tiles.TileSpacing = 'loose'; ax1 = ...

18 dagen ago | 0

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Why does my matrix not change with each iteration?
I don't know why you think B should be changed by the loop when you generate it prior to the loop and never touch it again. Perh...

18 dagen ago | 0

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Answered
Optimization of Material Parameters
lsqcurvefit

18 dagen ago | 0

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Answered
Doc links no longer work
I experienced this and found it was because of name conflict between one of my user-authored mfiles and a MathWorks-authored mfi...

19 dagen ago | 0

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Can I run online a version different from the latest?
I don't think you can select an earlier Matlab version in Matlab Online.

19 dagen ago | 0

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Answered
How to customize the markers of the scatter figure, as shown below
Here's one way. Not sure you'll like the gymnastics that it requires: [x,y]=deal(rand(1,40), rand(1,40)); %scattered input dat...

20 dagen ago | 2

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Answered
Linear indices from colon operator
[I,J]=ndgrid(p1:p2,p3:p4); linear=sub2ind(size(array) , I,J);

20 dagen ago | 1

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