MATLAB:向量的可变数目之和

问题描述

我必须对多个向量求和，但是它们的数量有所不同.

I have to sum multiple vectors, but their number varies.

我有:

g1 = [1 3 4 5 3 4 6 2 3 4 6 6]
g2 = ....
.
.
.
gn = [3 4 5 6 4 5 6 2 4 7 8 9]

我必须总结所有这些:

G=sum(g1 to gn)

我该怎么做?

推荐答案

如果将所有向量存储在矩阵g中，每行一个向量，这将使我容易得多.那么所需的结果将只是sum(g).

It would me much easier if you stored all your vectors in a matrix g, one vector in each row. Then the desired result would be simply sum(g).

如果确实需要将每个向量包含在不同的变量中，则可以在循环中使用eval计算总和:

If you really need to have each vector in a different variable, you can compute the sum with eval within a loop:

result = zeros(size(g1)); % initialize sum
for ii = 1:n
  eval(['result = result + g' num2str(ii) ';']) % add ii-th vector to the sum
end

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