How do I map array values on a logical array

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Riccardo Micci
Riccardo Micci 2021-1-12
评论： Steve Eddins 2021-1-12
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!

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采纳的回答

Steve Eddins
Steve Eddins 2021-1-12
Use logical indexing.
C = zeros(size(B));
C(logical(B)) = A

更多回答（1 个）

Bruno Luong
Bruno Luong 2021-1-12
编辑：Bruno Luong 2021-1-12
Result = zeros(size(B));
Result(B==1)=A

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