Averaging over a symmetric matrix
조회 수: 1 (최근 30일)
이전 댓글 표시
Hello,
Given an m,n matrix, I want to create a new matrix by doing the following: The element (i,d) and the element (d,i) should be averaged, the diagonal elements can be ignored. So for instance we average over element (1,5) and (5,1) which gives us a new (single entry) and hence a smaller matrix at the end - how can that be done in a quick way (not too many loops)?
댓글 수: 0
채택된 답변
Guillaume
2017년 8월 14일
편집: Guillaume
2017년 8월 14일
I don't see how you get a smaller matrix but doing the averaging is trivial:
(yourmatrix + yourmatrix.') / 2
You can triu or tril that result to keep the upper or lower triangle since it's symmetric.
And of course, it only works with square matrix otherwise there won't always be an (i,d) for a (d,i)
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Operating on Diagonal Matrices에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!