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how to calculate product of two 3D matrices (both 101 by 101 by 101 ) in matlab ?
u=randi(10, 3,3,2) u.^2

2 years ago | 0

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Set tick in Axes plane
That's pretty fancy. But no, I'm pretty sure Matlab doesn't have it.

2 years ago | 0

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Faster Image Processing?
[m,n,p]=size(Image); N=cellfun(@numel, pointer(:)); K=cell2mat( cellfun(@(q)q(:)', page(:),'uni',0)); %*ConstantMultipli...

2 years ago | 0

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Reduce the objective function value in fmicon
For this objective function value is coming in the order of e+10 You seem to think this value is large and far from the optimum...

2 years ago | 1

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The fastest method to perform sum of function
dx = 0.1; dy = 0.15; dz = 0.05; xmin = -2; xmax = 4; ymin = -2*pi; ymax = 2*pi; zmin = -1; zmax = 2; xs = xmin:dx:xmax;...

2 years ago | 0

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train a Neural network with different input output sizes
If it's a sequence-to-one regression then this syntax of trainNetwork would be appropriate, net = trainNetwork(sequences,respon...

2 years ago | 0

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Extrapolating x from a given y value using a curve-fitted cfit equation.
x=fzero(@(z) val(z)-y, z0)

2 years ago | 1

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Two-variable optimization with additional conditions
The constraint is equivalent to minimizing over the intersection of the unit sphere and a plane through the origin (normal to n0...

2 years ago | 0

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What could be the reason for this fzero error and how to solve it ?
You should plot the function to get a better idea where the solution is, dd = 0.1069; vv = 0.7889; L = 1; fun = @(aa) ( (...

2 years ago | 1

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How to change size of plot points
savtotal=1000; % initial amount hold on xlabel("Time (Months)") % graph labels ylabel("Amount Saved ($)") title("College Sav...

2 years ago | 0

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Answered
How to apply for loop in case of product of function inside double summation?
The most efficient approach, especially as a and b become longer, is to separate the sums, leading to a one-line computation: P...

2 years ago | 1

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Remove points in a 3D matrix that lie inside a 2D polygon on each layer
and effectively eliminate a column from the mri by adjusting the values of all points within that same polygon to 0 on every sli...

2 years ago | 0

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How to segment a matrix into N regions with sizes XYZ?
I'm not sure how to do an area-preserving transformation in Matlab See imwarp.

2 years ago | 0

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Need help graphing gradient of 2D polynomial
[Gx, Gy] = differentiate( sf, X, Y ); figure; surf(X,Y,Gx); title('X-Gradient') figure; surf(X,Y,Gy); title('Y-Gradient')

2 years ago | 0

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I want a Matlab Program for creating a single frame with combined plots of a surface plot of a two-dimensional standing wave field in addition to an image of projection plot
x = linspace(-1, 1, 100); y = linspace(-1, 1, 100); [X, Y] = meshgrid(x, y); frequency = 1; amplitude = 1; Z = amplitude * sin...

2 years ago | 0

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Using lsqcurvefit for parameter optimisation
Since you are just trying to verify the results of a previous paper, initialize with the solution parameters that the paper prov...

2 years ago | 0

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returning a unique array and comparing it with a different array.
The whole thing can be done in one line. No need for unique, reshape, or any of the rest of it. result = ismembertol(a,y_cosno...

2 years ago | 0

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Answered
Improving performance of parallel code sections
The task is too small for parallelization to have any meaningful effect. Similarly, the relative performance numbers for the dif...

2 years ago | 0

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Is it possible to have a line graph with a different marker for each point on the same line?
You can effect that as below. I don't see why you'd want it, however. x = 1:5; y = [2, 3, 1, 4, 2]; xc=num2cell(x); xc{end+...

2 years ago | 1

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Answered
Fminsearch does not work after increasing maxiter
The warning is not coming from fminsearch. It is coming from the ODE solver. As fminsearch iteratively explores different choice...

2 years ago | 0

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How do I make the fit better so that there are no negative y-values for the fit?
Why use fit() if you just want to interpolate? Why not use interp1 with the 'pchip' method instead? clc; clear all; %% --Va...

2 years ago | 0

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Answered
How do I make a secondary Y axis
It is, unfortunately, a very awkward thing to do. The datatip will show y3 with an increment of 200, but there may be ways to cu...

2 years ago | 2

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How to get equispaced values with a more exact result than using linspace and column functions?
I want exactly equispaced output There is no such thing as exactly anything in floating point computation. The inaccuracies you...

2 years ago | 1

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MATLAB won't run script unless functions are defined in a specific order?
As long as all your functions are placed at the bottom of the script, it shouldn't matter what order they are in.

2 years ago | 0

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Sort function indices in regards to the original data?
[val,is] = sort([86.9565 69.5652 65.2174 52.1739 43.4783 65.2174 91.3043 60.8696],'descend'); idx=1:numel(val);...

2 years ago | 2

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How to split array into sub arrays?
a = [1 3 5 8 11 12 15 17 18 19 20 21 24 29 31 32 33 34 35 36 38 39]; G=findgroups(discretize(a,[0:10:max(a)+10],'Include','ri...

2 years ago | 0

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Cubic interpolation coefficients and basis matrix
Using this FEX downloadable, https://www.mathworks.com/matlabcentral/fileexchange/44669-convert-linear-functions-to-matrix-form...

2 years ago | 0

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Answered
Getting points back from convexhull/trisurf, or 'how to find the closest point on a 3d surface to a given point.
This might be what you're looking for, https://www.mathworks.com/matlabcentral/fileexchange/52882-point2trimesh-distance-betwee...

2 years ago | 0

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Answered
How to get a smooth boundary between clusters?
Once you've extracted the boundary points, you could use sgolayfilt to smooth them.

2 years ago | 1

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Computation of the distance of the points from the interpolation curve?
dist = pdist([flowrate y], 'euclidean','Smallest',1);

2 years ago | 1