On 21-03-2012, at 08:10, sagarnikam123 wrote: > i am new to time series,whatever i know up till now,from that > i have uploaded time series file & what to build arma model,but for that i > want p & q values(orders) > tell me how to calculate best p & q values to find best AIC values for model > > i am doing but giving error >> bhavar<-read.table(file.choose()) #taking time series file
It's a file of numbers. >> decompose(bhavar$V1) > Error in decompose(bhavar$V1) : time series has no or less than 2 periods > > what this error is telling ? You asked a very similar question 8 days ago. You were given answers. If you want to use HoltWinters or decompose you will have to set the frequency of your time series to something > 1. You were told how to do that. You were also told to have a look at the forecast package. Berend ______________________________________________ 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.
