Hi! One of my time series happens to be a constant. When I call arima with c(0, 0, 0), it gives me error. Here is an example:
ts1 <- ts(rep(1, 29)) fit <- arima(ts1, order=c(0,0,0)) When I run the second line above, it gives me the following error "Error in decompose(ts(x[1L:wind], start = start(x), frequency = f), seasonal) : time series has no or less than 2 periods" I was confused why arima does not work if my time series is a constant. It should be very simple - resulted model should be a constant with the value of 1. Thanks, Aijun. -- View this message in context: http://old.nabble.com/Why-arima-does-not-work-when-the-time-series-is-a-costant--tp26287374p26287374.html Sent from the R help mailing list archive at Nabble.com. [[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.
