I don't think anyone will have a clue, because it does some very strange things, that I think you don't understand either. For example, you use this:
Q(3:2)
in several places. I think you don't know what it does, because it does absolutely nothing, except that it will create an error where you use it.
In general, if Q is any scalar or matrix, then this line will cause an error, like this:
Q(3:2)=zeros(3,2)
In an assignment A(:) = B, the number of elements in A and B must be the same.
The problem is the construct 3:2 produces an empty array. I.e., one with no elements at all. You cannot then stuff an array with 6 elements into something of size zero.
So the code that you show does nothing. Asking us how it will work is useless, since it won't work at all.
