質問

R2022B Update4 is not offered
Is it just me or the update 4 is not offered via the menu Help => Check for Updates I'm using Update 3

3年以上前 | 5 件の回答 | 0

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Finding the length of the longest continuous streak of a same number for each row of a matrix
p = 3; q = 10; r = 2; A = sort(randi(10,p,q,r,'uint16'),2) B = reshape(permute(A,[2 1 3]),q,[]); t = true(1,width(B)); [...

3年以上前 | 1

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Is this a mistake in documentation or my misunderstanding of FFT?
"Single sided Amplitude spectrum from Double sided spectrum it is only the DC component to be excluded from multiplying by 2" N...

3年以上前 | 0

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How to encrypt compilation files for standalone?
The MATLAB source files are already encrypted (with you compile with MATLAB compiler, MCC)

3年以上前 | 1

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movavg with custom type and weights
movavg requires first array is a column vector or matrix A = 1:5; B = [0.5 0.5]; movavg(A(:), "custom", B) % or reshape back...

3年以上前 | 2

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Effect of zero padding on FFT amplitude
If your (windowed) signal dies out to 0 in a smooth way then the padding with 0s on the tail changes little to the FFT spectrum ...

3年以上前 | 3

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how can I write this in a compact form? can anyone suggest a single line code for it
n = 8; ismember(mod((1:n)-(1:n)',n),[1 n-1])

3年以上前 | 1

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Hi. How I can write this formula with Matlab code?
n=10; psi=rand(1,n-2); chi = 0; for k=1:n-2 i = nchoosek(1:n-2,k); j = 1:k; l = k+1-j; il = i(:,l); ...

3年以上前 | 0

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How to calculate the entropy of a portion of image as in the following formula?
Please try this A=imread('ngc6543a.jpg');; A=double(A(1:500,:,:)); A=sum(A,3); M = 11; N = 11; % Build 8-neighbor [di,...

3年以上前 | 0

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How to generate random number from Bernoulli distribution?
p = 0.25 X = double(rand(1,1000) < p) histogram(X,'Normalization','pdf')

3年以上前 | 0

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Interp1 is not woking
Extrapolation is notoriously unstable. So there is no surprise here. v1r = -0.01:0.00001:0 f1r = interp1(v1, f1, v1r, 'spline'...

3年以上前 | 0

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all integer possibilities for equations
@Ravindra Pawar Replace eqt 2 to eqt 1 to remove one variable, you can solve it with gcd or more generally see this oldthread h...

3年以上前 | 1

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how to remove noise from curves and take their derivates
I would chose spline fitting rather than polynomial (bad) or rational. Look at the shape of your data, I doubt any simple analy...

3年以上前 | 0

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How to convert matrices of different sizes in a for loop into a single column vector?
... PhaseC = cell(1, nLevels); for k = 1:nLevels ... Phase = acos(subband./amp); PhaseC{k} = Phase(:); end Ph...

3年以上前 | 0

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How to sort minimum value from a matrix
See matchpairs function number = 6; A = 1+10*(rand(number,2)); B = [4,8; 6,8; 8,8; 6,6.7; 6,5.4; 6,4.1]; % Calculate all dis...

3年以上前 | 1

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Faster alternative to polyxpoly
I would add my own BLU_polyxpoly which derived from here https://fr.mathworks.com/matlabcentral/fileexchange/27673-2d-polygon-ed...

3年以上前 | 0

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Where is the code of a Matlab Object?
which comm.LinearEqualizer If it's mfile contains source code then you can see it.

3年以上前 | 1

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How can I find the filter bandwidth of Savitzky-Golay filtering?
sa-golay filter is just non-causal FIR filter, where the coefficients are computed as following order=3;framelength=11; B = sg...

3年以上前 | 1

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Multiplication of matrix and first dimension of a 3-D array without for loops
A = rand(4,4); B = rand(4,10,5); % orginal code for i = 1:10 for j = 1:5 C(:,i,j) = A(:,:)*B(:,i,j); end en...

3年以上前 | 1

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How to represent [airfoil] coordinates as a polynomial
You could use the free-knot spline xy = [0 0 0.00369000000000000 0.0134500000000000 0.0170200000000000 0.028070000000...

3年以上前 | 0

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Set unintentionally triggers uitable callback
I use uistyle to change the background, AFAIK it doesn't trigger callback unlike set()

3年以上前 | 0

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How to create all possible matrices of zeros and ones without having more than one '1' in the same column?
m = 2; n = 3; c = cell(1,n); [c{:}] = ndgrid(1:m); i = reshape(cat(n+1,c{:}),[],n); [j,k] = meshgrid(1:n,1:size(i,1)); X...

3年以上前 | 1

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How to generate code in MATLAB for randomly oriented short fibers?
See if this FEX can help you

3年以上前 | 0

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Does MATLAB support Intel i9-12900k CPU and Nvidia A100 GPU?
I don't know what you want to know, but here is the bench result (R2022b) on my Laptop, with this Alder Lake CPU: 12th Gen Intel...

3年以上前 | 1

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How to simplify the for loop for 3D matrix?
load('A.mat'); load('s1.mat'); load('s2.mat'); [m,n,p] = size(s1); % s = [reshape(s1, [m,1,n,p]), reshape(s2, [m,1,n,p]...

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is Matlab code a lot faster than Excel formulas?
Impossible to answer with such fuzzy question; the time depends on your hardware, your matlab version, your licences to acess to...

3年以上前 | 1

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generate two variable from distribution without same result
Warranty never repeated pairs lA = 0; uA = 5; % lower upper bound of A lB = -4; uB = 4; % and B n = 50; % ...

3年以上前 | 0

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How to adjust a curve fit such that it goes through a specific point
Add blue point as additional data point and associate it a strong weight to the rest (see Weights of options)

3年以上前 | 0

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Fast way of computing all possible products of n matrices
The more I try my idea, the more Matt's solution seem amazing to me. Here is an algorithm that that build a set of product of a...

3年以上前 | 1

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Why is pause function so inaccurate on Windows?
The reason is that Windows task scheduler resolution is the order of 15 ms in some recent versions. I create some C mex and cal...

3年以上前 | 1