How to get the index from a matirx

1 次查看（过去 30 天）

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.

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

M@lik Ali 2013-3-31

Thanks,

MATLAB Language Fundamentals Matrices and Arrays

在 Help Center 和 File Exchange 中查找有关 Matrices and Arrays 的更多信息

Find the treasures in MATLAB Central and discover how the community can help you!

Translated by