On Wed, 29 Apr 2015, Ignacio Diaz-Emparanza wrote:
1- open a quarterly/monthly series
2- select a variable and go to /Variable/Tramo analysis
3- remove the tickmark on "Standard automatic analysis" (if you leave this
tickmark all is ok)
4- you may leave the default on "Time series model plus seasonal adjustment"
(TRAMO+SEATS) or select "Time series model only" (TRAMO only)
Please have a look at "Transformations" tab, the option "automatic"
respect to log/no log transformation) is selected by default.
5- click on OK and gretl transfer the info to TRAMO/SEATS and run the
The TRAMO/SEATS window output shows a list of the parameters received from
gretl. You will see the parameter LAM=1 (no logs) instead of LAM=-1
Thanks, Ignacio. Actually gretl was not setting LAM=1. Rather, when
the "automatic" level/log option was chosen (LAM=-1), gretl was not
sending any LAM value to TRAMO. That's because I read the TRAMO doc as
saying that the automatic option was the default. However, it seems
that doesn't apply if the "Standard automatic analysis" is deselected.
So now in CVS we always send the selected LAM value explicitly.