Please suggest a method using Vectorization.

2012 10 13
1 个回答
回答已采纳
2 次查看（30 天）

0 个投票

I want to do the following operation using vectorization technique of Matlab. I am a novice user of matlab. So please tell me how i can get the following operation done without using the FOR Loop.
x=[1 2 3 4 5 6 7 8 9 10 11 1 2];
for i=1:length(x)
x(i)=((-1)^i)*x(i);
end

请先登录，再回答此问题。

 采纳的回答

Matt Fig
Matt Fig 2012-10-13
编辑：Matt Fig 2012-10-13

0 个投票

Many ways to do it.
Here is one:
x = x.*(-1).^(1:length(x))
and here is another:
x(1:2:end) = -x(1:2:end)

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Data Type Identification 的更多信息

产品

标签

Community Treasure Hunt

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

Start Hunting!

Translated by