Threshold the matrix with vector

Let say I have a matrix M with m x n dimensions. I want to threshold each column by different threshold. let say N contains the threshold for each column, therefore the dimension of N is n x 1 or 1 x n.

how can I do this by single command.

Answer 1

[Junaid]

One possible way is ..

lets us assume that N is 1 x n vector

N = repmat(N,size(M,1),1);

M_binary = M > N;

or

M_binary = M < N;

Answer 2

[Wayne King]

      A = randn(5,3);
      n = [0.5 0.8 0.2];
      thresh = bsxfun(@gt,A,n);
      B = A.*thresh;

B contains nonzero elements only where elements in A exceed the thresholds in the vector n.

[Aravin]

Thanks Wayne, but it is not giving me 0 1 matrix as after thresholding B should be binary ???

[Wayne King]

thresh is the 0 1 matrix just as I describe above