On Mon, 25 Jan 2021, Riccardo (Jack) Lucchetti wrote:
On Mon, 25 Jan 2021, Riccardo (Jack) Lucchetti wrote:
> On Mon, 25 Jan 2021, Sven Schreiber wrote:
>
>> Sounds good to me. Does this operation have a name in algebra?
>
> To the best of my knowledge, it's a variant of the Khatri-Rao product (as
> mentioned in the help files). I've just learned that Wikipedia also calls
> it the "face-splitting" product.
OK; I just pushed to git the modifications needed to gretl_matrix.c to handle
the case when B is NULL. Seems to work ok. However, this is not user-visible
yet because I'm not sure of how to handle a hansl function whose signature
would be the one I proposed, that is: two matrix arguments, with the second
one optional.
Allin: I mucked about a little with geneval.c, but I was afraid I was
mishandling things, so I'd rather wait for a hint from you. Thanks!
I've had a go at it -- see what you think. Also please check if the
complex case is right.
Allin