Updating an array elements with elements from another Array

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Zaharaddeen Hussaini
评论： Zaharaddeen Hussaini 2018-5-27
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)

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采纳的回答

Rik
Rik 2018-5-26
How about something like this:
A = rand(10,10);
B = rand(10,10);
Result = A-B;
LogicalIndex= Result<0;
A(LogicalIndex)=B(LogicalIndex);

更多回答（1 个）

Ameer Hamza
Ameer Hamza 2018-5-26
编辑：Ameer Hamza 2018-5-26
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)
  1 个评论
Zaharaddeen Hussaini
Zaharaddeen Hussaini 2018-5-27
This works in my case as well like you pointed out. However index based solution is what I needed here. Thank you

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