Hi everyone I'm trying to do a semiparametric regression using generalized additive models (mgcv) with lags of the parameter. Does any of you know a package or a methodology for introducing the lags into the model? Thank you very much Sergio Ibarra Espinosa National Center of Environment Technological Metropolitan University Santiago - Chile ______________________________________________ ¿Con Mascota por primera vez? Sé un mejor Amigo. Entra en Yahoo! Respuestas es.answers.yahoo.com/info/welcome [[alternative HTML version deleted]]