How can I add values to an empty vector from a for loop?
조회 수: 53 (최근 30일)
이전 댓글 표시
y=0;
for l=1:5
y = y+(4.*l*(1/20).^2.*sin(pi*(1/20))*sin(pi*(1/20)))./(pi^2.*(l.^2-(1/20)^2).*(l.^2-(1/20)^2));
disp(y);
end
댓글 수: 0
답변 (1개)
Damien
2016년 10월 3일
Hello Penglu,
I'm not sure of what you want to do exactly but you can try this code:
y=0;
for l=1:5
y(l) = y(1)+(4.*l*(1/20).^2.*sin(pi*(1/20))*sin(pi*(1/20)))./(pi^2.*(l.^2-(1/20)^2).*(l.^2-(1/20)^2));
end
disp(y);
More generally use this:
for i = 1:5
y(i)=2*i;
end
댓글 수: 1
Stephen23
2016년 10월 3일
Note that preallocation is recommended instead of expanding arrays inside loops:
참고 항목
카테고리
Help Center 및 File Exchange에서 Creating and Concatenating Matrices에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!