On Mon, Oct 25, 2010 at 12:38 PM, Dimitri Liakhovitski <dimitri.liakhovit...@gmail.com> wrote: > I know that I can use as.yearmon in the package "zoo" to find the year > and the month of a date. > I can use as. yearqtr to find the year and the quarter. > But how can one find just the year of a date? > > Thanks a lot!
Here are three ways. The first uses the fact that the year is the whole number part of a yearmon object. > library(zoo) > d <- Sys.Date() > floor(as.numeric(as.yearmon(d))) [1] 2010 > > as.numeric(format(d, "%Y")) [1] 2010 > > as.POSIXlt(d)$year + 1900 [1] 2010 -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com ______________________________________________ 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.
