Assigning random numbers to an variable

2022 2 7
1 个回答
更新时间：2022 2 7
7 次查看（30 天）

0 个投票

Hello,
I was wondering how to assign random numbers to a varibale that already has numbers. Any help is appreciated
Example: variableX = (1:1:336);
variableY = Assigns a random number to each values of the variableX
Thank you

请先登录，再回答此问题。

回答（1 个）

0 个投票

The rand function is for uniformly distributed random numbers, while randn is for normally distributed random numbers. Both functions accept arguments for the size of the output that you want:
>> A = rand(3,3)
A =
0.8147 0.9134 0.2785
0.9058 0.6324 0.5469
0.1270 0.0975 0.9575
>> B = randn(3,2)
B =
2.7694 0.7254
-1.3499 -0.0631
3.0349 0.7147
You can also overwrite a variable that already exists, so it sounds like you want:
variableX = randn(336,1);
This would overwrite what was in variableX with a new column vector of normally distributed random numbers, where the length of the vector is 336.

类别

在 帮助中心 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