Acquiring related Matrix Members
1 view (last 30 days)
Show older comments
I have a n by m matrix A and 1 by n array B. Assume
A = rand(3,5)
B = [3;5;2]
How can I get 1st rows 3rd element, 2nd rows 5th element and 3rd rows 2. element of A matrix w/o for loop?
Each rows related element is the member of B array as you can see?
0 Comments
Accepted Answer
More Answers (1)
Andrei Bobrov
on 7 Aug 2012
Edited: Andrei Bobrov
on 7 Aug 2012
out = A(sub2ind(size(A),(1:numel(B))',B(:)));
0 Comments
See Also
Categories
Find more on Multidimensional Arrays in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!