[Gretl-devel] Re: clean-up of the "Cheat sheet" guide chapter
Am 13.02.2025 um 19:41 schrieb Allin Cottrell:
On Wed, 12 Feb 2025, Sven Schreiber wrote:
> Here's a tested variant of what I meant:
>
> <hansl>
> open grunfeld
>
> # how many periods (here: years) to average
> newfreq = 4
>
> # a dummy for endpoints
> series endpoint = (time % newfreq == 0) # 'time' already in dataset
small refinement: I remembered (or was reminded) that we also have the
$time accessor in gretl, so we do not need to rely on a series "time"
already being in the dataset. So the line can be written as:
series endpoint = ($time % newfreq == 0)
...
> Again, is the old solution (starting with "But back in my day...")
> really still needed?
Probably not, but if it's omitted it may be worth inserting the
example from chapater 15 rather than just giving a reference to it.
[about
interaction dummies] Hm, the links are even clickable, it's not a
"dumb" reference, so I'm not sure the content would have to be repeated...
...
> HOWEVER, for the "dataset compact 1" line gretl tells
me "not
> supported", and I don't understand why. Shouldn't it be quite easy to
> compact from any periodicity down to 1?
That's now fixed, but there's more to say about it when we get a chance.
OK, looking forward to it.
cheers
sven