Matrix addition only to elements equal to zero
조회 수: 3 (최근 30일)
이전 댓글 표시
Hi!
I would like to perform a matrix addition, i.e C=A+B.
However, I want this addition to be performed only for the elements in matrix B that is zero, for all non-zero elements of matrix B the addition should not be performed.
Obviously, this could be done - certainly not beautifully - with an if statement in a loop over all the elements in matrix B. However, I wonder if there is a more neat and faster solution to do this? Especially because my matrices are of size (256,256,329) which makes this solution quite slow.
And for clarity, here is my proposed but unsatisfactory solution:
for i=1:numel(reg_nolower)
if reg_nolower(i) == 0
reg_nolower(i)=reg_nolower(i)+reg_leftarm(i)+reg_rightarm(i);
else
end
end
Thanks in advance!
댓글 수: 2
Bruno Luong
2023년 11월 20일
Your code doesn't not reflect your description : your test is on reg_nolower which is the resultant not the reg_leftarm or reg_rightarm, and which is A, B and C in that ?
채택된 답변
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!