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

______________________________________________

[hidden email] mailing list

https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide

http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.