R help - Jul 2009 - row data manipulation in data frame

R users,
I am a beginner in R.  I have a time series data on various macro variables
like GDP, unemployment rate, consumer spending, imports, exports etc. I am
interested in calculating  year over year growth rate for each of those
variables. Is there any simple function in R for carrying out such repeated
operations.

I would like to carry out growth rate between two consecutive yearly row
data and also between current quarter and previous years quarterly value.

any help would be highly appreciated,

thanks in advance.

srinivas
statistical analyst

	[[alternative HTML version deleted]]

Hi

maybe ?cumsum, or ?diff or ?aggregate

Regards
Petr

r-help-bounces at r-project.org napsal dne 10.07.2009 10:56:34:
> R users,
> I am a beginner in R.  I have a time series data on various macro 
variables
> like GDP, unemployment rate, consumer spending, imports, exports etc. I 
am
> interested in calculating  year over year growth rate for each of those
> variables. Is there any simple function in R for carrying out such 
repeated
> operations.
> 
> I would like to carry out growth rate between two consecutive yearly row
> data and also between current quarter and previous years quarterly 
value.
> 
> any help would be highly appreciated,
> 
> thanks in advance.
> 
> srinivas
> statistical analyst
> 
>    [[alternative HTML version deleted]]
> 
> ______________________________________________
> 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.