清空筛选条件
清空筛选条件

Sum up parts of a vector?

3 次查看（过去 30 天）
Thor
Thor 2013-1-24
Dear all,
I have a 105120*1 vector and I want to sum up in steps of 288. So I want to have the sum of the first 288 elements, then the sum of the next 288 elements and so, until the end of the vector. So finally I want to have a new vector of the dimension 365*1. So I need finally 365 sums. How can I do that?

请先登录，再回答此问题。

采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2013-1-24
编辑：Azzi Abdelmalek 2013-1-24
x=rand(105120,1);
out=sum(reshape(x,288,[]))'

更多回答（1 个）

Wayne King
Wayne King 2013-1-24
编辑：Wayne King 2013-1-24
Something like
k = 1;
stepsize = 288;
for nn = 1:288:105210-stepsize
partsum(k) = sum(vekt(nn:nn+stepsize-1));
k = k+1;
end
That's one possible way. There are many others.

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by