Question

I have a Matrix A = [1 2 -3; 4 5 -2]. Now without using for loop, I want to filter the array in such a way so that any value less than 0 will return 0. So, the output matrix will be RES = [1 2 0; 4 5 0].

any link / sample code to solve the problem would be greatly appreciated.

Answer 1

RES = A;
RES(RES<0)=0

RES<0 produces a logical array, in this case [false false true; false false true]. Then the notation RES(RES<0)= allows you to set all the values what are true to some value.

This is a pretty typical, and useful, Matlab idiom.