Indexing (extracting value from rows)

2 views (last 30 days)
I have a 5 x 5 array, A, and a 5 x 1 array, B = [2 3 1 4 3]'. How can I extract the element from each row of A as they occur in B. i.e., I want the 2nd value of row one of A, they 3rd value of row two of A, ..., and the 3rd value of row five of A.
Any help would be appreciated.

Accepted Answer

Matt J
Matt J on 5 Jun 2019
idx=sub2ind(size(A), ones(size(B)), B);

More Answers (0)


Find more on Sparse Matrices 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!