How to get the index from a matirx

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M@lik Ali
M@lik Ali 2013-3-31
Hi all
i have two matrix A and B, the size of A is like 10 86 and size of B is 3 86.
actually the matrix B is inside the matrix A.
now what i want is to know the index from matrix A where the vectors of matrix B exist.
like we have a row 1,2,3... 86 in matrix B and same in matrix A as well. I want to get the index of A where this row exist in A. please help me.

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Wayne King
Wayne King 2013-3-31
A = randn(10,10);
B = A(3:6,:);
[C,IA,IB] = intersect(A,B,'rows','stable');
IA gives you the row indices in A where B is

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