> Dear All, greetings from Paris ! > > I am currently using the seasonal adjustment facilities in Gretl, either > the tramo or X12 Arima analyses directly or throught the arima > modelling tool (using X12 option). However, it seems that both X12 and > tramo parameters are set to default values and cannot be modified via > the gretl interface. Is it the case, and could it be done, maybe via the > programs themselves ? > ...
The gretl--X12 plugin uses the default Arima-X12 values. The tramo- seats plugin allows to assign a small subset of the tramo-seats parameters: those related to outlier detection and the ARIMA specification. It would bee good to enlarge the amount of parameters that gretl can assign, but I suppose it is a hard and a bit tedious work to try with all of them. Tell Allin and Jack if you are interested in some particular parameters. I also think it would be interesting to have a way to recover, for example, the outlier corrected series or the residual series.
