[R] extracting year an month from ts data set

[Moshe Olshansky]

In your case 

months <- rep(1:12,len=length(tab6.1))

should work.

--- Richard Saba <sabaric at charter.net> wrote:

> I have an ascii data set of monthly observation
> starting in Jan 1946 with a
> header.
> 
> hstarts
> 57
> 65
> 95
> 103
> 103
> 97
> 94
> .
> .
> .
> 
> Which I read with the following code
> tab6.1<-ts(read.table(fname,
> header=TRUE),frequency=12,start=c(1946,1))
> 	
> I would like to run a time series model with dummy
> variables for each month.
> If I had a variable which take values from 1 to 12
> indicating the month I
> could use the factor() function to model the series.
> 
> reg1<-lm(hstarts~ -1 + factor(months))
> 
> Is there a function that will extract the year and
> month from a ts data set?
> 
> Thanks,
> Richard Saba
> 
> ______________________________________________
> R-help at 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.
>