MATLAB: Extracting element values from a matrix in Simulink

extract_elementsmatrixsimulink

I have a covariance matrix P(k) that's [2×2] I want to read the values of the diagonal elements with a scope. I was wondering how this could be done?

Best Regards,

Shawn Daniel

Best Answer

You can use a selector block

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MATLAB: Access Diagonal Matrix Element

As it is a rectangular matrix you will get 15 diagonal(i=j) elements. If you have a square matrix of size nxn, you will get n diagonal elements.

MATLAB: Extracting non-zero elements in a matrix or an array

a=[1 0 2;3 4 5;0 7 8]
a(a~=0) %get all the non zero values
diag(a) %elements on the diagonal
s1=sum(diag(a)) %sum of the elements on the diagonal
sum(sum(a))-s1 %sum of non-diagonal elements

Best Answer

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MATLAB: Access Diagonal Matrix Element

MATLAB: Extracting non-zero elements in a matrix or an array

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