How can I sum only few values in a diagonal matrix?
조회 수: 13 (최근 30일)
이전 댓글 표시
if I have a diagonal matrix, and I use sum(diag(A)) , it gives me the sum of entire diagonal, but I only want the sum of lets say 1st three values in the diagonal? How can I add them?
Thank you!!
댓글 수: 0
채택된 답변
추가 답변 (2개)
Alberto
2014년 4월 14일
Sum=0;
for k=1:3 % will sum 3 first diagonal elements Sum=Sum+A(k,k);
end
You can change the range k=1:3 with an array with the index of elements u want to sum.
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!