Hello, I need to know how to import ARIMA coefficients. I already determined the coefficients of the model with other software, but now i need to do the forecast in R. For Example: I have a time series named x and i have fitted an ARIMA(1,0,1) (with other software) AR coef = -.172295 MA coef = .960043 (i know that this is not a good model, it's just an example) I try to import the coefficients doing this: > fit <- arima(x, order=c(1, 0, 1), fixed=c(-.172295, .960043, 0)) > fit Call: arima(x = x, order = c(1, 0, 1), fixed = c(-0.172295, 0.960043, 0)) Coefficients: Error in se && nrow(x$var.coef) : invalid 'y' type in 'x && y' I will be very pleased if someone help me. _________________________________________________________________ Mais do que mensagens conheça todo o Windows Live. http://www.microsoft.com/windows/windowslive/ [[alternative HTML version deleted]]
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