Answered
3D hexagonal mesh grid
V=nsidedpoly(6).Vertices; [X,Z]=ndgrid(V(:,1),0:3); [Y,~]=ndgrid(V(:,2),0:3); scatter3(X(:),Y(:),Z(:)); view(-60,70) xla...

2 years ago | 0

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Answered
A compact way to replace zeros with Inf in a matrix
Allso just for fun. A = [0 3 2 5 6; 1 1 4 3 2; 9 0 8 1 1; 5 9 8 2 0; 3 1 7 6 9]; A=A+1./(A~=0)-1

2 years ago | 3

Answered
How can I populate the rows of a difference matrix without using a for loop?
X=X(:); Y=Y(:); x=reshape(x,1,1,[]); y=reshape(y,1,1,[]); d=hypot( X - x , Y - y ); Diff=@(U,u) ((U(1)-u)./d(1,1,:)) ...

2 years ago | 0

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Answered
Converting 3D matrix to 2D matrix image
See rgb2gray or im2gray.

2 years ago | 0

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Answered
Can you help me design a Cylindrical Conical Helix
u=linspace(0,1,30); v=linspace(0,2*pi,30); [u,v]=meshgrid(u,v); x=(1-u).*(2.5+cos(v)).*cos(4.*pi.*u); y=(1-u).*(2.5+cos(v))....

2 years ago | 0

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Answered
How can I adjust the space between each subplot for a 5*3 subplots setup?
n=4; %1x4 figure; t=tiledlayout(1,n,'TileSpacing','tight'); for i=1:prod(t.GridSize) nexttile imagesc(phantom(12...

2 years ago | 0

Discussion

Do Reinvent the Wheel
Are there Matlab features which intend to satisfy your needs but fail in certain critical areas, forcing you to abandon them com...

2 years ago | 3

Answered
Can you help me design a Cylindrical Conical Helix
For example, t=linspace(0,20*pi,6000); R=exp(-0.1*t); x=R.*cos(t); y=R.*sin(t); z=R.*cotd(30); plot3(x,y,z)

2 years ago | 0

Answered
I cant find MLP-Mixer in MATLAB.
Maybe you can import it into Matlab from this pyTorch repository, https://github.com/lavish619/MLP-Mixer-PyTorch

2 years ago | 1

Answered
MATLAB refuses to display blue in converted JPEG image: is showing singular blue pixels
Make sure that you, (1) Use the same caxis in both image displays, (2) Convert to double first, then divide by 255. Not the...

2 years ago | 0

Answered
How can I adjust the space between each subplot for a 5*3 subplots setup?
The subaxis function in this FEX download https://www.mathworks.com/matlabcentral/fileexchange/3696-subaxis-subplot?s_tid=srcht...

2 years ago | 0

Answered
Creating a Grid for cooridnates
and I also do pick up a few spurious spots that are'nt part of the grid If outliers are present, I would use the approach belo...

2 years ago | 0

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Answered
How can I unflatten a dimension in a neural network?
Are you using importNetworkFromPyTorch ? I feel like it should take care of all of that.

2 years ago | 0

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Answered
Reshaping 4d array into 2d matrix with a specific pattern
reshape( permute(tempC,[2,1,4,3]) ,[N*J, I*K] );

2 years ago | 1

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Answered
Wrong output graph when using ifft on rectangular pulse?
h = fftshift(ifft(ifftshift(H))); % Calculate the time axis based on the new value of S t = ((0:S-1)-ceil((S-1)/2))/S/(f(2...

2 years ago | 1

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Offsetting Data Though Curve Fitting
If the stress-strain data is all linear elastic (or if you can extract a portion that is), then you could use polyfit: p=polyfi...

2 years ago | 0

Answered
Creating a Grid for cooridnates
Use histcounts2. x =[3.9988 5.4914 7.3364 130.3843 132.5535 134.5383 257.6364 259.6390 261.5130 ...

2 years ago | 1

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Adjoint / inverse nufft
If your t,f sampling is going to be reused, it may be gainful to use an algebraic inversion with the help of this FEX download, ...

2 years ago | 0

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Adjoint / inverse nufft
If these are your actual data sizes, an optimization approach seems to work not too badly: t = [0:300 500.5:700.5]; S = 2*sin(...

2 years ago | 0

Answered
Trapezoidal Rule of Convolution with Non-Uniform Intervals
It is not clear from your post which two functions you are convolving, so I will assume here that it is the same as your other r...

2 years ago | 0

Answered
Using Values from Tabulated Data
t = [1 2.5 3.6 4]; A = [78 80 85 96]; Afun=@(tq)interp1(t,A,tq); Afun(1) Afun(2) Afun(2.5)

2 years ago | 1

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Answered
Find all intercepts for all parameter values
As an example, y=linspace(-1,1,1000); V=sin(pi*y-0.4); %fake input data loc=diff(sign(V)) & abs(y(1:end-1))<0.5; yinterc...

2 years ago | 0

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Answered
How to graph a convolution with same time length as inputs
Convolution doesn't make sense if your time points are not equi-spaced. You should interpolate everything so that they are: t=[...

2 years ago | 0

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Answered
calculating the provide integral
A common approach is to discretize the integral and instead compute sum of squared differences (SSD), e.g., SSD=norm( interp1(x...

2 years ago | 0

Answered
How to make a solid of revolution along the y-axis for a function with complex parts?
X = 0:0.1:pi; R = sqrt(9-0.5*(X-7).^2); R(imag(R)~=0)=nan; [z,x,y] = cylinder(R); surf(x,y,z); xlabel X;ylabel Y; zlabel Z; a...

2 years ago | 1

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Answered
Use logic index to sort back to original data that are logic 1.
opts=detectImportOption('test1gofcells.xlsx'); clear data for k=numel(ix):-1:1 opts.Sheet=k; if ix(k...

2 years ago | 0

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Answered
Problem fitting the curve with fminsearch
but when I set the function to be in polynomial or sinusoidal form it does not fit the curve to the experimental like it does w...

2 years ago | 0

Answered
How to detect the object on the right?
You can use bwareafilt(BW,1) to detect the largest object in the image.

2 years ago | 0

Answered
Identify some nodes near a known node
It can help. The outliers in d below near correspond to the faces at the caps of the tube. Once you have these faces, you can u...

2 years ago | 0

Answered
Declaring a matrix with null dimension, or checking if a matrix exists
There is, but it is highly inadvisable to iteratively grow a matrix like you are doing. Here is one alternative: my_matrix=cel...

2 years ago | 0

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