you can do this:
a <- tapply(VAR, YEAR, prod)
The use "merge" to create a new variable of the length of your original VAR,
and just do
VAR/prod.VAR
----------------Contact
Details:-------------------------------------------------------
Contact me: tal.gal...@gmail.com | 972-52-7275845
Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) |
www.r-statistics.com (English)
----------------------------------------------------------------------------------------------
On Mon, Apr 26, 2010 at 6:07 PM, n.via...@libero.it <n.via...@libero.it>wrote:
> PROD
[[alternative HTML version deleted]]
______________________________________________
R-help@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.
