Making a matrix of R*C size that takes the values randomly from an array- Y.
3 次查看(过去 30 天)
显示 更早的评论
I want to make a random matrix of R*C size that takes the values randomly from an array Y.
For example I want to make a 7*8 matrix that takes value from this array Y = [ 1 6 1 8 4 5], and place them randomly in the matrix.. I have tried randi command to do this, but randi doesn't take fixed values like I have stated above.
0 个评论
采纳的回答
Wan Ji
2021-8-18
Hi, friend! randi is OK, it can help, look
Y = [ 1 6 1 8 4 5];
R = 7; C = 8;
indices = randi([1,numel(Y)], R, C);
A = Y(indices)
The result is
A =
8 1 5 4 4 4 1 1
1 1 8 1 1 5 6 1
5 1 1 1 6 1 1 1
8 1 8 5 1 1 4 5
5 1 8 8 1 1 8 8
5 8 1 8 8 6 6 1
1 1 5 1 4 4 8 4
Wish you will like it
1 个评论
Wan Ji
2021-8-18
Here, because 1 appears in Y array twice, its appearance possibility in matrix A is twice as much as other numbers( 6,8,4 and 5).
更多回答(1 个)
Yazan
2021-8-18
i1 = 7; i2 = 8;
y = [1 6 1 8 4 5];
randIdx = randi(length(y), 1, i1*i2);
data = reshape(y(randIdx), i1, i2)
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!