creating new matrix from remaining of existing 2 matrices

Hi

i have a big matrix A (34000x9) from which i have created matrix B (3340x9), taking specific rows form matrix A, now the remaining (MatrixA - MatrixB) rows , i want to put in another MatrixC.

Can anybody please help me how to do that?

thanks in advance..really need help.

Answer 1

[Rik]

Use ismember with the rows switch to find the rows in A that exist in B, flip this logical vector with ~ and use the result to index into A.

L=ismember(A,B,'rows');
C=A(~L,:);

[SBS]

i am sorry...can u please answer in a little detail please.

thank you.

[Rik]

See my edit (untested code).

[SBS]

thank you so much..it worked perfectly.