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R: Apply a Seasonal ARMA process

Hello,

You have three parameters, two sar and one intercept.

arima(x, order=c(0,0,0), seasonal=list(order=c(2,0,0), period=4),
	transform.pars = FALSE, fixed = c(0.54, 0.5, rep(NA, 1)))


I also believe that the answer you got from Rolf is more to the point.
Try something along the lines he suggested.

Hope this helps,

Rui Barradas

Em 24-06-2013 10:34, Stefano Sofia escreveu: