Re: [Gretl-users] X-12-Arima
On Sat, 11 Sep 2010, John C Frain wrote:
I can complete the analysis with the following amended spec.
series{
...
}
transform{function=auto}
outlier{}
regression{variables=(const, td)}
automdl{}
x11{ save=( d11 ) }
Here the spec transform{function=auto} selects levels or
log transformation on the basis of AICC... I have also chosen to
include trading day adjustment and adjustment for outliers in
the model...
Is it possible to have an interface to X12-Arima similar to that
for a TRAMO/SEATS adjustment?
This is now done, to an extent, in CVS/snapshots. I've added two
controls to the X-12-ARIMA dialog: a check box that controls
whether or not "outlier{}" is added to the .spc file, and a
three-way radio-button choice between use logs, don't use logs and
automatic, to govern the "transform{}" function.
Allin