how can I generate a random matrix?
1 次查看(过去 30 天)
显示 更早的评论
hello guys, what code can i use to generate a mxn matrix provided that the value is from 1 to x(depending on the desire of user) and the values should be unique from each other. :)
1 个评论
Image Analyst
2012-10-7
There is a help facility in MATLAB (beyond the Answers forum). It's right there built into MATLAB. For things like this you can use the help documentation. So you can either type "help random" "doc random" into the command window, or click the question mark icon, or (in older versions) get help from the menus. Or you can click in a word in the editor and type F1. For things like this (random) you'd get faster help by using the built-in help.
采纳的回答
Matt Fig
2012-10-7
You will of course have to make sure that x==m*n, as you describe it.
f = @(x,m,n) reshape(randperm(x),m,n);
f(20,5,4)
ans =
4 9 12 2
17 1 8 16
19 7 6 18
5 3 14 13
20 11 15 10
3 个评论
Matt Fig
2012-10-7
Or, if your version of MATLAB supports it:
f = @(x,m,n) reshape(randperm(x,m*n),m,n);
f(43,,10,4)
ans =
40 25 43 16
3 9 11 2
19 36 29 26
37 32 8 27
7 38 12 31
33 41 35 39
22 20 42 1
30 4 24 15
10 17 5 23
28 34 6 21
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!