[R] Odp: Help with diff(sqrt()) function in terms of time series

[Petr PIKAL]

Hi

r-help-bounces at r-project.org napsal dne 05.12.2010 00:19:17:

> 
> year1 is the time series data set below
> 11.64
> 11.50
> 11.49
> 11.16
> 11.15
> 11.37
> 11.37
> 11.57
> 11.83
> 11.87
> 11.85
> 11.92
> 11.77
> 11.71
> 11.57
> 11.24
> 11.27
> 11.33
> 11.17
> .................
> 
> With a total of 1304 rows of data.
> 
> When I try to run the code:
> diff(sqrt(year10))

Probably year10 is factor. Make it numeric.

Regards
Petr



> I get the response: "data frame with 0 columns and 1304 rows" and then I
> subsequently try to convert my data into a time series with the 
following
> function:
>  yearstate = ts(diff(sqrt(year10)))
> > yearstate
> Time Series:
> Start = 1 
> End = 1304 
> Frequency = 1 
> 
>    1
>    2
>    3
>    4
>    5
> ............all the way to 1304.  So, it basically erased all of my 
previous
> data, and the data are just row numbers all the way to 1304...  Any help
> would be appreciated.  I tried my best to produce actual code. 
> -- 
> View this message in context: 
http://r.789695.n4.nabble.com/Help-with-diff-
> sqrt-function-in-terms-of-time-series-tp3072877p3072877.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> 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.