[R] ts and stl functions

[Prof Brian Ripley]

On Wed, 12 Jul 2006, Daniel sutcliffe wrote:

> Hi, 
> 
> I have imported a csv file into R which contains one column (the rate er 100,000 population of a disease, by month over 11 years) I coerced into a time series using the following function, 
> 
> tstkr<-ts(tkr,deltat=1/12) 

That's likely making a ts out of a data frame and not the one column of 
the data frame.  What does dim(tkr) say?

> 
> This seems to work fine, and when I check for the class of the object using class(tstkr) I get "ts" as the response. 
> 
> When I try to use the stl function in stats I get the error message: 
> 
> Error in stl(tstkr)only univariate series are allowed 
> 
> I then tried this: 
> 
> tstkr <- ts(c(tkr), deltat=1/12) 
> 
> however this made no difference...I still get an error - does anybody know what is wrong? 

Try tkr[[1]]

> 
> Regards, 
> 
> Daniel 
> 
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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