How to create such a matrix like this?

Hello,

I need to create a matrix as following:

Number of the rows depend on 'i', where i=3 and number of columns depend on i*s, where s=12 in this example.

There are 12 ones in each row(in this example), all others are zero.

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

I need a code to generate this matrix appropriate for all i and s values.

Thanks for help!

Answer 1

[the cyclist]

i =  3;
s = 12;

M = zeros(i,i*s);

for n = 1:i
    M(n,(n-1)*s+1:n*s) = 1;
end

[Taner Cokyasar]

Thank you so much cyclist.