Updating an array elements with elements from another Array

Hello, Could I please get some assistance on how to update array elements with elements from another array, For example

A = rand(10,10);
B = rand(10,10);
Result = A-B;

%Identifty which elements are greater than 0 
SlctElemnts = Result > 0 ;
%%Update all the elements in A that is less than 0 with the element in B
% A (Result<0);
disp(A)

Answer 1

[Rik]

How about something like this:

A = rand(10,10);
B = rand(10,10);
Result = A-B;
LogicalIndex= Result<0;
A(LogicalIndex)=B(LogicalIndex);

[Zaharaddeen Hussaini]

So B will take in Logical Index as well apparently. Missed that out. Thank you

Answer 2

[Ameer Hamza]

For indexing based solution, refer to Rik's answer. But in this specific case, you are trying to find the element-wise maximum value from both A and B. So you can do it faster using max() function,

A = max(A, B)

[Zaharaddeen Hussaini]

This works in my case as well like you pointed out. However index based solution is what I needed here. Thank you