Matlab，包含指定范围内随机数的矩阵 [英] Matlab, matrix containing random numbers within specified range

问题描述

我对 Matlab 完全陌生，正在尝试创建一个 m×n 矩阵，其中包含指定范围内(即 -1 和 1 之间)的数字.

I am absolutely new to Matlab and am trying to create an m-by-n matrix containing numbers within a specified range (ie. between -1 and 1).

是否有与 rand(m, n) 等效的函数，我可以在其中自己指定范围，或者我是否需要明确地创建一堆随机数(如本answer) 并从它们创建一个矩阵?

Is there an equivalent function to rand(m, n) where I can specify the range myself or would I need to explicitely create a bunch of random numbers (as ie. was described in this answer) and create a matrix from them?

任何指向相关文档等的指针，高度赞赏.

Any pointers to relevant Documentation, etc. highly appreciated.

推荐答案

这直接来自 Matlab 的 rand 文档.这是你想要的吗?

This is straight from Matlab's documentation for rand. Is this want you want?

示例 1

从区间 [a, b] 上的均匀分布生成值:

Generate values from the uniform distribution on the interval [a, b]:

r = a + (b-a).*rand(100,1);

尝试通过在命令窗口中输入 doc rand 来阅读 Matlab 文档.它非常有用且用户友好.

Try reading the Matlab documentation by entering doc rand in the command window. It is really informative and user friendly.

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