[Gretl-devel] Re: Kronecker product and power

[Allin Cottrell]

On Thu, 1 Feb 2007, Sven Schreiber wrote:

> One question that comes to my mind when the datatypes matter 
> like in this case: Do things like inner vector products actually 
> return scalars or 1x1-matrices?

The experimental method (!)

nulldata 2
matrix u = {1,2,3}
matrix v = {1,2,2}
matrix x = u*v'
scalar y = u*v'
z = u*v'

If you run this you'll see that while both "matrix x = u*v'" and 
"scalar y = u*v'" are OK, when you don't specify a type the 
result appears as a scalar.

Allin.