Hi all! I want to fit a time series with 17376 values by using the arima() function. If I extract the residuals from the fitted model there are values for the residuals 1 to 710 but the residuals 711 to 17376 have the value NA. Does anybody know what the problem could be? Is the function arima() restricted to a maximum length of the underlying time series? Besides, is there a better possibility to get the fitted values from an arima model than using the residuals? It would be great if somebody could help me! Thanks a lot in advance... Cheers, Katharina [[alternative HTML version deleted]]