MATLAB: Getting intersected index without ruining an order of the original data.

Question

Assuming that, A=[1234 345 675 11 2], and B=[345 2 11 2]

Don't know how to get a reference matrix from B to A as like ans=[2 5 4 5]

Answer 1

Use the ismember function:

A=[1234 345 675 11 2];
B=[345 2 11 2];
[~,C] = ismember(B,A)
C =
     2     5     4     5