I won't try to answer all your questions right now, but here are
the quick ones:
On Mon, 4 Sep 2006, Sven Schreiber wrote:
- why is opening of PcGive and RATS files under database
instead of import?
Because they are opened in "database mode": you get a window
showing all the series, from which you can import selected
series to gretl's workspace. Both Rats and PcGive databases can
contain series of mixed frequencies.
- in the ADF dialog, shouldn't constant/trend/quad trend be
mutually exclusive radio buttons instead of checkboxes?
No, that's correct, you can run several tests in one go, if you
like.
- in spectrum estimation: I can't see any difference between
selecting
the sub-menu entries "periodogram" or "Bartlett lag window", the
same
things appear to happen (namely table and graph).
Well yes, but take a look at the details. One gives the "raw"
sample periodogram and the other gives a smoothed version (along
with fractional integration tests).
Allin.