extracting value from a vector

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Hello everybody!
i need help extracting some values ​​from a vector. More specifically, I have two vectors A and B (vector A contains 1: 3000 while vector B contains 10 random numbers) and I need to extract from vector A only the values ​​contained in Vector B. I have already tried with "== "and" iseq ", but the vectors are not the same length and therefore I cannot perform the operation.
thank you for your time!

Accepted Answer

Olof Engström
Olof Engström on 18 Mar 2021
[intersection, indices] = intersect(A,B)
There you get the intersecting values and the indices to the intersecting values in A

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