using rand to generate numbers

1 次查看（过去 30 天）
PChoppala
PChoppala 2013-9-3
Hi
I have a simple question. I understand that both a and b vectors (please see below) will generate 5 random numbers from 0 to 5 with an interval of 1 between each number. But I would like to know if there is any difference between vectors a and b or if they have the same meaning.
N=5;
a = [0:N-1]+rand(1,N)/N;
b = [0:N-1]+rand/N;
Thank you

请先登录，再回答此问题。

采纳的回答

the cyclist
the cyclist 2013-9-4
Is this homework?
If so, I suggest you read
doc rand
and see what the difference is between the syntax
rand(1,N)
and
rand
  2 个评论
PChoppala
PChoppala 2013-9-4
Well, I do know the difference .. that
rand %gives a number between 0 and 1
rand(1,N) %gives N numbers between 0 and 1
But I wanted to know if there is any technical difference in vectors a and b. I guess they are the same, but wanted to confirm.

请先登录，再进行评论。

更多回答（1 个）

Shashank Prasanna
编辑：Shashank Prasanna 2013-9-4
Try executing it and seeing it for yourself.
rand just generats one random number and adds it to each element of the vector: [0:N-1]
where as rand(1,N) generates N random numbers and adds them element wise to the vector: [0:N-1]
They are obviously different. Is that what you are looking for?
  1 个评论
PChoppala
PChoppala 2013-9-4
Yeah I understand this .. the more I think, the more easy it becomes .. guess this question should be deleted

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Logical 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