MATLAB: How to find a value of a vector from another one

arrayfindmatrixvector

There are two (A&B) vectors with N samples each. Each number of A has a specific value in B.

I have a value in A (a number among N samples), and interested to find it in B. For example:

A=[250 400 300 200 100 …]

B=[5 6 1 2 9 …]

I want to find B when A =200, the answer is B=2 (in this case).

Thanks

Best Answer

is this what you mean?

B(A==200)

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MATLAB: How to generate random matrix from another one

You can use randperm() to shuffle the values of array 'm'.

% Original array
m =rand(180, 57, 11);
% Random permutation index
randpermIdx = randperm(numel(m)); 
% m shuffled
mShuffle = reshape(m(randpermIdx), size(m));

To convince yourself that mShuffle is merely a random reorganization of m with no additional or missing values or duplicate samples, use this line below which should return True.

isequaln(sort(m(:)),sort(mShuffle(:)))

MATLAB: How to find order of the elements in a vector in another vector

[~, idx] = ismember(A, B)

Best Answer

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