Hi, I'm trying to model an ARMA(1,[1,4]), i.e. I want only lags 1 and 4 of the Moving Average part. It's the '[1,4]' part that is giving me a problem.
I've tried different arma's and arima's in different packages, namely: packages tseries, fArma, FinTS, timeSeries, TSA, Zelig, ds1, forecast For example, with package FinTS: > ( ARIMA(y, order=c(1,0,c(1,4))) ) Error in arima(x = x, order = order, seasonal = seasonal, xreg = xreg, : 'order' must be a non-negative numeric vector of length 3 Using ARIMA(1,0,1) with a seasonal argument for lag 4 does not get me any further. With package Zelig I got: > ( zelig(Diff(lppi,1) ~ one + lag.y(1) + lag.eps(1) + lag.eps(4) , model="arima" , data=Q) ) Error in model.frame.default(mf$formula, data) : invalid type (list) for variable 'lag.eps(1)' I get basically the same kind of answers with other packages and with different configurations. Thanks for any advice, len [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.