How to generate a matrix whose rows numbers are not elements of a given row vector

Hi all, pls i want generate a matrix from a matrix A of size m x n whose rows number cannot be an element in a row vector v = [v1 v2 .....vk]. Thanks

[Andrei Bobrov]

Give a simple numerical example.

[Hugo]

Could you please be a little more specific?

1) What does it imply "to generate a matrix from a matrix A"? What constraints do that impose to the generation process of the new matrix?

2) What do you mean by rows number: Each element in each row of the new matrix or the whole row?

In principle, you can always generate a matrix using a random number generator, like rand(m,n) or randn(m,n) (among others). The probability of any element of that matrix to be an element of v is almost zero, depending on the numerical precision. Even if you happen to find one element that is in v, you can again generate another number (or another matrix) using the random number generator.

Best regards

Answer 1

[Jim Hokanson]

The following code should do what you want.

use_row    = true(1,size(A,1));
use_row(v) = false;

B = A(use_row,:);

Answer 2

[Andrei Bobrov]

out = A(setdiff(1:size(A,1),v),:);