10-01-2017 05:41 PM
I'm trying to forecast sales on the weekly level for 12 weeks suing SAS Enterprise Guide 7.1.
I have my code as follows:
proc varmax data = weeklevel plots=all; id week_end interval = week; model sales_net/ method = ml nseason = xlag =; output out=wint_add_out_weekly back=12 lead=12; run;
I have my data at week level, with week beginning on wednesday & ending on Tuesday. Based on the following trend & seasonality, how do I enter the values for "nseason" & "xlag"?
Any help is appreciated! Thanks!