MATLAB: How to create a random matrix that contains only of 0’s, 0.5’s and 1’s

matrix random arrangementrandom number generator

I would like to create a random matrix arrangement of 0's , 0.5' and 1's, without using rounding method …

Best Answer

 >> randi([0,2],5,5)/2
 ans =
          0.5            1            0            0            0
          0.5            1            0            0            1
            1          0.5          0.5            0          0.5
          0.5          0.5            0            0            0
          0.5          0.5            1          0.5            1

Related Solutions

MATLAB: Code to generate matrix

You can put it together using diag()

d0 = [repmat(4,1,8), 5, repmat(4,1,8), 5, repmat(3,1,8)];
d1 = ones(1, length(d0)-1);
d9 = ones(1, length(d0)-9);
A = diag(d0,0) + diag(d1, -1) + diag(d1, 1) + diag(d9, -9) + diag(d9, 9);
b = [zeros(1,17), 5, zeros(1, 7), 5];

MATLAB: Cell and Mat problem

You can use blkdiag:

>> A = [1,2;5,2];
>> B = [2,1;4,5];
>> blkdiag(A,B)
ans =
     1     2     0     0
     5     2     0     0
     0     0     2     1
     0     0     4     5

If you are generating those matrices in a loop, then you can simply put them into a cell array first:

>> N = 5;
>> C = cell(1,N);
>> for k = 1:N; C{k} = randi(9,2); end % <- your loop
>> blkdiag(C{:})
ans =
     1     2     0     0     0     0     0     0     0     0
     3     2     0     0     0     0     0     0     0     0
     0     0     3     1     0     0     0     0     0     0
     0     0     4     9     0     0     0     0     0     0
     0     0     0     0     9     5     0     0     0     0
     0     0     0     0     5     4     0     0     0     0
     0     0     0     0     0     0     9     2     0     0
     0     0     0     0     0     0     4     8     0     0
     0     0     0     0     0     0     0     0     4     4
     0     0     0     0     0     0     0     0     3     1

Best Answer

Related Solutions

MATLAB: Code to generate matrix

MATLAB: Cell and Mat problem

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