Use element values for IF statements

Hi all,

I would like to use the value of the elements in matrix B as condition for changing the values in matrix A. Note that Both A & B have the same size. For example, let A = [1 1;1 1] and B = [120 50; 75 175]. If the values of any element in B is greater than 100, I would like to change the values of the element in its corresponding position in A to zero(0). So the new matrix A for this example would be A = [0 1; 1 0]. Please how can I code this? Thanks in advance.

OlFat

Answer 1

[Image Analyst]

A = double(B <= 100)

[olu]

Thanks mate

Answer 2

[dpb]

A basic use of "logical addressing"...

ix=B>100; % the logical condition vector A(ix); % the substitution

You can, of course, combine the two and eliminate the intermediary--

A(B>100)=0;

[olu]

Thanks dpb

Answer 3

[Matt J]

 A(B>100)=0;

[olu]

Thanks Matt.