Re: [Gretl-users] diagcat
On Fri, 28 Sep 2012, Sven Schreiber wrote:
>> Also, what happens if A and B are not square? (I know, I
could just try
>> that out, but too lazy, and that wouldn't necessarily answer what's
>> intended as a result.)
>
> Nothing spectacular. You just have non-square zero blocks in the
> north-east and south-west corners of the result.
>
At the risk of being pedantic: so a block-diagonal matrix is only
returned if the inputs are square, otherwise it's just a block matrix.
(w.r.t. the help text)
You're right, fixed in CVS. Also, my previous comment was wrong: when A
and B are not square, the zero NE and SW blocks of the resulting matrix
are not the transpose of each other. At the risk of being pedantic!
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Riccardo (Jack) Lucchetti
Dipartimento di Economia
Università Politecnica delle Marche
(formerly known as Università di Ancona)
r.lucchetti(a)univpm.it
http://www2.econ.univpm.it/servizi/hpp/lucchetti
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