[Gretl-users] Holt-Winters package

Hello I've been using the Holt-Winters package but I cannot replicate my Excel-calculation results with this package. The starting value from the package for the trend is 245 mine is 166.396. By running a regression on the full sample I get completely different results for these starting values, although the same methodology as described in the help description has been used. For replication purposes I send my excel spreadsheet and I would be glad to understand how these starting values have been effectively calculated. Thank you for your help Raul Gimeno **