> 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.
The problem is th 'Tu' bit. Abbreviated day-of-week names and three
letters long. You'll have to replace/ delete them.
datestr <- "Tu 10/Jul/2007 21:59:13"
newdatestr <- sub("Tu", "Tue", datestr)
dateval <- strptime(newdatestr, "%a %d/%b/%Y %H:%M:%S")
dateval$yday #190
Regards,
Richie.
Mathematical Sciences Unit
HSL
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