Answered
Cone fitting in Matlab
Consider using rightcircularconeFit(), which is non-iterative, from this FEX download, https://www.mathworks.com/matlabcentral/...

2 years ago | 0

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Answered
how do I fill between 3 lines?
One way: b = 48; time = 0:1:40000; mFast = 6/30 ; mSlow = 4.3/30; yFast = (mFast*time)+b; ySlow = (mSlow*time)+b; plot(...

2 years ago | 0

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Question

Why is fminimax not accepting sparse constraint matrix data?
From the documentation for fminimax, it appears that fminimax is supposed to accept constraint matrices in sparse form, e.g., ...

2 years ago | 1 answer | 2

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answer

Answered
What will be a suitable option to circumvent a non-invertible matrix?
The approach is valid if A is symmetric, positive definite, but 1e-10 may not be large enough to add substantial conditioning.

2 years ago | 0

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Curve fitting for 4 independent variables
If you have four unknown variables, you need four lb(i). Upper bounds would also help. Also, you should address the fact that y...

2 years ago | 0

Answered
The simplify function is not completely simplifying my polynomials.
syms x prob2 = ((3*x-4)*(x^2-2*x+4)); problem2 = expand(prob2)

2 years ago | 0

Answered
Why does the "fsolve" function in Optimization Toolbox not converge when using a quadratic cost function?
Very often, quadratic functions have no roots to find, e.g., fsolve(@(x) abs(x).^2+1, [1+1i;0+3i])

2 years ago | 0

Answered
use the 'patch' function with different results (using different matrices)
If you are trying to recover the boundary from a surface triangulation, then, load trace [~,P]=freeBoundary(delaunayTriangul...

2 years ago | 0

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Answered
Using an anonymous function handle as input into another function handle
It has nothing to do with nesting of hte handles. If you don't call an anonymous function with inputs, it can't return anything ...

2 years ago | 0

Answered
generate new coordinates (starting from initial coordinates) that are arranged outwards (by a distance H) and on the same plane
Project the points into a 2D coordinate system on the plane. Then use polyshape. Then project back to 3D. load trace H=0.5; ...

2 years ago | 1

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Why is accuracy absent in training progress plot?
Probably because the examples in the docs are for trainNetwork, not trainSOLOV2.

2 years ago | 0

Answered
How to test if equation in .p file is linear.
Well, there's no test that will verify linearity globally (for all inputs), but you can select random inputs and test the applic...

2 years ago | 0

Answered
Error using trainNetwork (line 184) The training sequences are of feature dimension 1 792 but the input layer expects sequences of feature dimension 1.
fn=@(z) reshape( num2cell(permute(z,[1,3,2]),2) ,[],1); X_train=fn(X_train); y_train=fn(y_train); X_test=fn(X_test); y_te...

2 years ago | 1

Answered
Linprogr in Matlab not finding a solution when a solution exists
The problem seems to be that the inequality constrained region has barely any intersection with the equality constrained region....

2 years ago | 0

Answered
Problems with savepath in R2023b
Tech Support advised running Matlab "As Administrator" and this did solve the problem.

2 years ago | 1

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Answered
Get indices of matching values (vectorized find function)
[~,b_reconstructed]=ismember(c,a)

2 years ago | 0

Answered
generate triangular mesh starting from the external nodes (rx3) of a circle
load V V=num2cell(V,1); [x,y,z]=deal(V{:}); trisurf(delaunay(x,y), x,y,z)

2 years ago | 0

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Answered
Error in the use of fminunc function
I would try a clean re-install of Matlab (i.e., deleting all installation folders that may have been created).

2 years ago | 0

Question

Problems with savepath in R2023b
I have just installed R2023b on two different machines. Both give the following problem, when trying to use savepath >> addpath...

2 years ago | 3 answers | 7

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Answered
License Manager Error -9
Change your username back to what it was.

2 years ago | 0

Answered
Rotating data using griddata
You should probably just use imrotate with the loose option flag.

2 years ago | 0

Answered
Change axes position in tiled layout
This File Exchange alternative gives considerable flexibility on the spacing, https://www.mathworks.com/matlabcentral/fileexcha...

2 years ago | 1

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Answered
Random points on a curve
Youc an interpolate the curve at random points using interp1.

2 years ago | 0

Answered
transform infinite plane into finite circular plane
You can use patch. [a,b,c]=deal(1); %fake input data P=[1 1 1]; R=2; t=(0:359)'; V=R*[cosd(t),sind(t)]*null([a,b,c])' ...

2 years ago | 2

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Answered
Can object properties be assigned in bulk without the need for a loop statement?
Is there a vectorized approach to achieve this without the need for a loop statement? No, there isn't. Nor is there anything t...

2 years ago | 0

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How to solve out of memory error when constructing sparse matrix
It's a 5 GB matrix. Are you sure you have enough RAM?

2 years ago | 0

Answered
quadruple summation using function
n = 100; tic; sum(sin(0:n))^4; toc

2 years ago | 1

Answered
create a normal plane passing through a point P knowing the coordinates of the direction of the Normal vector to point P
a=normal(1); b=normal(2); c=normal(3); d=dot(normal,P); fimplicit3(@(x,y,z) a*x+b*y+z*c-d )

2 years ago | 2

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Answered
Is there a classdef startup/initializer method?
As one example, you can initialize a property with a class-related function like below. Various other options are discussed here...

2 years ago | 0

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Answered
How to handle cells?
I would use logical arrays instead of cells. r = 'r'; s = 's'; p = 'p'; d = "Its a Draw!"; u1 = "User1 wins!"; u2 = "User2 wins...

2 years ago | 0

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