Thanks a lot to all of you, it works now!!!!
Cheers,
Solène Goy> Subject: Re: [R] How to get the day of the year> From: [EMAIL
PROTECTED]> To: [EMAIL PROTECTED]> CC: r-help@r-project.org> Date: Wed, 1 Oct
2008 13:52:09 +0100> > On Wed, 2008-10-01 at 08:42 +0000, Solene Goy wrote:> >
Hello,> > I am new to R and I would like to get the day of the year from> >
numerous data in the following form: %a %d/%b/%Y %H:%M:%S (for> > example from
Tu 10/Jul/2007 21:59:13 I would like to get 191)> > > > Whatever I try, I get
NAs.> > Tu isn't a valid abbreviated for for the day (in my locale at least),>
which might explain the NAs and you don't show how you tried to get the> julien
day.> > Here are two ways that work.> > > tmp <- as.Date("Tue 10/Jul/2007
21:59:13", format = "%a %d/%b/%Y %H:%M:%S")> > tmp> [1] "2007-07-10"> >
format(tmp, "%j")> [1] "191"> > as.numeric(format(tmp, "%j"))> [1] 191> > tmp
<- as.POSIXlt("Tue 10/Jul/2007 21:59:13", format = "%a %d/%b/%Y %H:%M:%S") > >
tmp> [1] "2007-07-10 21:59:13"> > format(tmp, format = "%j")> [1] "191"> >
as.numeric(format(tmp, format = "%j"))> [1] 191> > Is this what you wanted?> >
G> > > > > Well... I need your help, please!> > Thanks in advance> > Yours
sincerely,> > Solne Goy> >
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