Answered
what exactly norm(x) function do?
Assuming you only care about p=2, If you already have code that computes norm(x) for real x, you can extend it to complex x via,...

4 years ago | 0

Answered
Formula for norm(x)
Assuming you're only interested in p=2, if you already have code that computes norm(x) for real x, you can extend it to complex ...

4 years ago | 0

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Multiple Image reconstruction with real and imaginary part in 2d array
What is the name of the variable stored inside the .mat files? If I assume it is X, then, a_real = load("img_real.mat").X; a_i...

4 years ago | 0

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Answered
Equality between 2 floats not recognized when using <= relational operator
I feel pretty confident that either Money_types or Var2 is not truly equal to 0.05 in spite of what you suppose. It may appear t...

4 years ago | 0

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Concatenate vectors stored in cell array
cell2mat( reshape( yourCell.' ,1,[],27) )

4 years ago | 1

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Answered
Why ifft results of analytic signal spectrum don't match with theoretical time formula?
The IFFT and the continuous inverse Fourier transform are not the same thing. tau=0.4; t0=2.8; mag=10; Fs=200; dT=1/Fs; ...

4 years ago | 0

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Answered
Add constraints to intermediate variables in the process of using least squares to minimize the objective function to fit the parameters of the equation
With the constraints you mention, the problem does not fall within the scope of lsqnonlin. You will have to use fmincon, which a...

4 years ago | 0

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Answered
Trapezoidal rule with unevenly spaced data points
See trapz.

4 years ago | 0

Answered
regionprops Bounding box property returns values outside image dimensions
You should be comparing BoundingBox(1) with ImageSize(2) image = imread('https://www.mathworks.com/matlabcentral/answers/uploa...

4 years ago | 1

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How do I graph a summation over an interval?
n=(0:10).'; fcn=@(x)sum( (2/3).^n .* cos(9.^n.*(pi.*x)) ); fplot(fcn,[-1,1]/10)

4 years ago | 1

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Answered
How to Vectorize this Code?
n3Array=normalize(n3Array,2,'n'); b0=b0/norm(b0); b0angles=acosd(n3Array*b0);

4 years ago | 0

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Answered
ScatteredInterpolant for Surface Extrapolation
The surface appears to be very well modeled by a Gaussian. An appropriate thing would therefore be to extrapolate using a Gaussi...

4 years ago | 0

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Answered
ScatteredInterpolant for Surface Extrapolation
[MAP_X,MAP_Y,MAP_Z]=readvars('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1131415/MATLAB.csv'); res=@(q)re...

4 years ago | 0

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Using the output of one run of a function as the input of another iteration of that function
for i = 1:Counter List = ReduceArray(List); end

4 years ago | 1

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How should we evaluate the similarity of two graphs?
I don't know why you think the MSE is "large", but perhaps the percent area difference would be more suitable to you: load elli...

4 years ago | 0

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How to edit the name of a variable which is an object of a class?
This might be what you want. obj={GridSys1,GridSys2,GridSys3}; %list of objects [I,J]=find(A.*(1-eye(size(A)))); K=numel(...

4 years ago | 0

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Answered
Find max value in polyfit
xcrit=roots(polyder(q1)); %set derivatives to 0 xcrit(imag(xcrit)~=0)=[]; %get rid of non-real solutions zmax=max( polyva...

4 years ago | 1

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How to do 4-D Equivalent of 3-D surface fitting ?
You can lsqcurvefit if you have Optimization Toolbox. If not, then you might be able to use fminsearch, if you have only a smal...

4 years ago | 1

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Answered
How to use a trained neural network as objective function in fminsearch?
fminsearch.is unlikely to be able to handle 12 unknowns well. You should probably use fminunc if you have the Optimization Toolb...

4 years ago | 0

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Answered
How does the mod function compensate for floating point round off?
I suspect it is just meant to tell you that it doesn't do a naive computation like in modNaive below. m=1000*pi; n=pi; mod(...

4 years ago | 1

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Plotting a triangle from 3 3x1 matrices
a = [5; 8; 13]; b = [-5; 7; 21]; c = [12; -32; 0]; V=num2cell([a,b,c,a],2); plot3(V{:},'-o', MarkerFace='r'); xlabel x; ...

4 years ago | 0

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Answered
If I renew my support contract can I download and install in new computer
The support contract is unrelated to the ability to install on additional machines. Most licenses entitle you to activate a Matl...

4 years ago | 0

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Why fsurf show anything for my function?
You should normalize the function, so that the default MeshDensity works well. syms eta__2 zeta__2 Hvs2 =((230584300921369395...

4 years ago | 0

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Answered
How to find mean in theta-direction?
[theta,rho]=cart2pol(x,y); G=discretize(rho,___); %fill in the blank with desired binning specs zMean=splitapply(@mean,z(:...

4 years ago | 1

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Answered
Potential Bug? Freezing while making plots iteratively
Does the freeze always happen right before the saveas? If so, it might be worth issuing a drawnow() command right before the sa...

4 years ago | 1

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Answered
Don´t know how to perform IFFT considering my frequency.
But I don´t understand what is the correlation between parameter "n" and my frequency, how do I know how many points to solve? ...

4 years ago | 0

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Answered
How to re-scale a part of 2D matrix?
range=VD>1901&VD<1919; Pe_OPT(range,:) = rescale(Pe_OPT(range,:), 2.778e+07, 3.1005e+07);

4 years ago | 0

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Answered
how to rotate a 3d matrix ?
A=randi(50,5,4,3) rot90(A) %or imrotate(A,90)

4 years ago | 0

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how to rotate a 3d matrix ?
permute(A,[2,1,3]) or pagetranspose(A)

4 years ago | 0

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Answered
Find min and max value of vector without using built-in function
%maxval = A(1); %minval = 1; maxval = -inf; minval = +inf;

4 years ago | 0