[R] finding the year of a date
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! -- Dimitri Liakhovitski Ninah Consulting www.ninah.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.
Re: [R] finding the year of a date
Try this: format(Sys.Date(), %Y) On Mon, Oct 25, 2010 at 2:38 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! -- Dimitri Liakhovitski Ninah Consulting www.ninah.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. -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40 S 49° 16' 22 O [[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.
Re: [R] finding the year of a date
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)$year + 1900 [1] 2010 -- Statistics Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] finding the year of a date
Thank you very much! Dimitri On Mon, Oct 25, 2010 at 12:46 PM, Gabor Grothendieck ggrothendi...@gmail.com wrote: On Mon, Oct 25, 2010 at 12:38 PM, Dimitri Liakhovitski dimitri.liakhovit...@gmail.com wrote: I know that I can use as.yearmon in the package zoo to find the year and the month of a date. I can use as. yearqtr to find the year and the quarter. But how can one find just the year of a date? Thanks a lot! Here are three ways. The first uses the fact that the year is the whole number part of a yearmon object. library(zoo) d - Sys.Date() floor(as.numeric(as.yearmon(d))) [1] 2010 as.numeric(format(d, %Y)) [1] 2010 as.POSIXlt(d)$year + 1900 [1] 2010 -- Statistics Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com -- Dimitri Liakhovitski Ninah Consulting www.ninah.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.
