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Detect changed value in an array

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Praveen Choudhury
Praveen Choudhury 2016-2-22
回答： goerk 2016-2-22
I have an array of m*1 size. I want to detect the changes in the values in the array. Is there some function like ischanged in simulink? Or can anyone tell me how to do it.

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goerk
goerk 2016-2-22
You can simply compare a copy of the original vector with the actual vector.
A = [1 ;2; 3];
B=A;
B(1)=5; % change the array
changedMask = A~=B

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