MATLAB Answers

How do I map array values on a logical array

15 views (last 30 days)
Hello,
I have a vector with numbers that i need to be remapped on different positions according to a logical bitmap array.
Example:
A = [3 6 8 1 0 -3];
B = [ 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0];
Result = [ 0 0 0 0 0 0 0 0 3 6 8 1 0 -3 0 0 0];
The number of ones in B always matches the length of A but in general length(B)~=length(A)
How can i do that without going through a for loop?
Thanks!

Accepted Answer

Steve Eddins
Steve Eddins on 12 Jan 2021
C = zeros(size(B));
C(logical(B)) = A

More Answers (1)

Bruno Luong
Bruno Luong on 12 Jan 2021
Edited: Bruno Luong on 12 Jan 2021
Result = zeros(size(B));
Result(B==1)=A

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by