Using "for" loop for summation of matrix product
조회 수: 1 (최근 30일)
이전 댓글 표시
I am using nested for loops to multiply matrices and do the summation of the same. But for Lk(k) variable its only taking the kth element instead of whole matrix Lk,
This is the code
Lk=kron(I,bk);
Gk=Hk;
Lkh=transpose(Lk);
Gkh=(Gk)';
B=zeros(M,M);
for k=1:M
for i=1:M
s=0;
for m=1:M
s= s+ inv(Lk(k)'*Gk(k,m)'*(Gk(k,m)*Lk(k))) * Lk(k)'*Gk(k,m)'*Gk(i,m)*Lk(i);
end
B(k,i)=s;
end
end
This is the warning given: Warning: Matrix is singular to working precision.
댓글 수: 0
채택된 답변
Jeffrey Clark
2022년 7월 11일
@Nir Vaishnav, you don't say what any of the iputs are, but since kron will produce a matrix (unless both inputs I and bk are either column or row vectors), the indexed Lk(k) and Lk(i) are linear indexs to the a single element. If as you say you want the whole matrix Lk you should loose the subscripts or change them to appropriate row and col ranges.
댓글 수: 2
Jeffrey Clark
2022년 7월 11일
@Nir Vaishnav, so Lk is a matrix, why do you take only one linerally addressed value from it (the indexed Lk(k) and Lk(i)) and expect a matrix when you are also only multiplying by single values from Gk(k,m) and Gk(i,m)?
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Logical에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!