selecting random

4 次查看（过去 30 天）
milad babaei
milad babaei 2011-6-8
i have made a vector like this x(1,i), i=1 to 10e6 in a m.file(this is my output format ) now i want to choose randomly 10000 of them and then showing those vectors.

请先登录，再回答此问题。

回答（2 个）

Andrei Bobrov
Andrei Bobrov 2011-6-8
x = rand(1,10e6);
I = randperm(10e6);
xout = x(I(1:1e4));
Clemens
Clemens 2011-6-8
If you want with laying back you could get random indices with:
ind = randi(1e6,1e4,1);
xout = x(ind);

类别

在 Help Center 和 File Exchange 中查找有关 Random Number Generation 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