Question

Guys I have problem to make a random matrix by considering some constraint and another matrix.

I have matrix :

A= [ 1 4 3 5 2 6 8 7 10 11 12 9;
     4 1 2 3 6 5 9 8 7 10 11 12;
     1 2 3 4 5 6 12 9 8 10 11 7]

then, i want to make a matrix B (3,12) which has value between 0 and 2 ([ 0 2]) randomly.
but there is some constraint :

a. no consecutive zeros (0) more than 2.
b. sum all element in each row in matrix B <=11,
c. if there is value 1 or 2 or 3 or 4 in coordinate (a,b) in matrix A. so we have to force in coordinate(a,b+1) in matrix B have value zero (0).

thanks for your help before guys.

Answer 1

So, if you use this answer, to generate a B which fulfills the constraints 1 and 2, you can use something similar to this

B = rand(3, 12); %# Just an example matrix.
idx = bitand(A >= 1, A <= 4);
B([false(size(idx, 1), 1) idx(:,1:end-1)]) = 0

to enforce the third constraint.