How to separate a matrix randomly

Question

0 个投票

Hello everyone, I want to ask how to separate a matrix randomly. For example, I have a matrix

A = [...
   0     0     0
   0     0     0
   1     1     1
   1     1     1]

and I need a C1 and C2 matrix:

C1 =

   0     0     0
   0     0     0
   0     0     1
   1     1     0

C2 =

   0     0     0
   0     0     0
   1     1     0
   0     0     1

Is it possible we can generate them by separating the 1 digit randomly?

Thanks before :)

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Answer 1

Stephen23 2014-12-1

1 个投票

Randomly allocate all values from one matrix to two other matrices:

>> A = [0,0,0,0;0,0,0,0;1,1,1,1;1,1,1,1];
>> B = 0.5<rand(size(A));
>> C1 = zeros(size(A)); C2 = zeros(size(A));
>> C1(B) = A(B);
>> C2(~B) = A(~B);

If you only require the last two rows of values, then you can "&" the index with another logical matrix giving the restrictions that you require.

Answer 2

Andrei Bobrov 2014-12-1

0 个投票

C1 = randi([0 1],size(A)).*A;
C2 = A - C1;