Note that there is some discussion in the help desk article in R News 4/1 and a table of tested conversions at the end of that article. If x is of class "Date" then for converting from Date to POSIXct the table suggests as.POSIXct(format(x)) or as.POSIXct(format(x), tz = "GMT") according to whether you want the current time zone or GMT.
On 9/1/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Full_Name: Erich Neuwirth > Version: 2.3.1 > OS: Windows XP, Linux > Submission from: (NULL) (131.130.135.167) > > > Converting Sys.Date() to a POSIX compliant time type in different ways > produces inconsistent results: > > Sys.date() > [1] "2006-09-01" > > as.POSIXct(Sys.Date()) > [1] "2006-09-01 02:00:00 CEST" > > as.POSIXlt(Sys.Date()) > [1] "2006-09-01" > > as.POSIXct(as.POSIXlt(Sys.Date())) > [1] "2006-09-01 01:00:00 CEST" > > Applying as.POSIXct directly or first applying as.POSIXlt and then > applying as.POSIXct produces different results. > > This happens on Linux with timezone "CEST" > > Sys.time() > [1] "2006-09-01 11:03:36 CEST" > and on Windows with timezone "W. Europe Daylight Time" > > Sys.time() > [1] "2006-09-01 11:11:15 W. Europe Daylight Time" > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
