"COMTE Guillaume" <[EMAIL PROTECTED]> writes: > Hi all, > > I'm getting confused by date handling. > > > > I wish to read a date from a file wich is a number of seconds since 1970 > (POSIXct). > > Then i wish to convert this date to a human readable form (POSIXlt) > > > > By example : > > > > ctDate<-1132963200 #"Wed Aug 30 14:24:37 2006" > > is(ctDate) > > [1] "numeric" "vector" > > > > ctDate isn't a numeric vector, it is a POSIXct... none of the clues > inside the docs has given me the answer, i can't cast it, i can't > converti t to POSIXlt because it is wrong class (as.POSIX** don't want > to work...) > > > > What is the trick ??
It *is* a numeric vector. You need to add it to the epoch time or do an explicit conversion > ISOdatetime(1970,1,1,1,0,0)+ctDate # epoch is 01:00 in CET [1] "2005-11-26 01:00:00 CET" > structure(ctDate,class="POSIXct") [1] "2005-11-26 01:00:00 CET" (Your date seems out of whack by some 24 million seconds...) -- O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ [email protected] 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.
