This is what you asked for. > Prod2007 <- 1:10
> Prod2006 <- Prod2007/1+c(0,diff(Prod2007)) > Prod2005 <- Prod2006+(1+c(0,diff(Prod2006))) > Prod2004 <- Prod2005+(1+c(0,diff(Prod2005))) > Prod2006 [1] 1 3 4 5 6 7 8 9 10 11 > Prod2005 [1] 2 6 6 7 8 9 10 11 12 13 > Prod2004 [1] 3 11 7 9 10 11 12 13 14 15 Sure that's what you want? On Thu, Jun 3, 2010 at 12:30 PM, n.via...@libero.it <n.via...@libero.it>wrote: > > Dear list, > I would like to ask you a question. I'm trying to build the time series' > production with the Divisia index. The final step would require to do the > following calculations: > a)PROD(2006)=PROD(2007)/1+[DELTA_PROD(2007)] > b)PROD(2005)=PROD(2006)+[1+DELTA_PROD(2006)] > c)PROD(2004)=PROD(2005)+[1+DELTA_PROD(2005)] > my question is how can I tell R to take the value generated in the previous > step (for example is the case of the produciton of 2005 that need the value > of the production of 2006) in order to generate the time series production?? > (PS:my data.frame is not set as a time series) > Thanks for your attention!! > > > > [[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. > -- Joris Meys Statistical Consultant Ghent University Faculty of Bioscience Engineering Department of Applied mathematics, biometrics and process control Coupure Links 653 B-9000 Gent tel : +32 9 264 59 87 joris.m...@ugent.be ------------------------------- Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php [[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.
