Hi,
You could use:
strptime(dates, format="%d/%m/%Y %H:%M")[1:2]
#[1] "2013-12-31 00:00:00" "2013-12-31 01:00:00"
as.POSIXlt(dates, format="%d/%m/%Y %H:%M")[1:2]
#[1] "2013-12-31 00:00:00" "2013-12-31 01:00:00"
A.K.
Thanks. as.POSIXct works for the most part. The only problem is part of
data I'm working has it's own time zone. Is there a way to not have a
time zone displayed? My times do not change with Daylight saving.
On Thursday, February 6, 2014 1:43 PM, arun <smartpink...@yahoo.com> wrote:
HI,
The question is not clear. If it is to get the hours,
strptime(dates, format="%d/%m/%Y %H:%M")$hour
# [1] 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 0
#or
as.numeric(format(as.POSIXct(dates, format="%d/%m/%Y %H:%M"),"%H"))
# [1] 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 0
#or
as.numeric(gsub(".*\\s+(\\d+)\\:.*","\\1",dates))
#[1] 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 0
A.K.
Why am I know getting hours after I convert the date?
dates <- c('31/12/2013 0:00', '31/12/2013 1:00',
'31/12/2013 2:00', '31/12/2013 3:00', '31/12/2013 4:00', '31/12/2013
5:00', '31/12/2013 6:00', '31/12/2013 7:00', '31/12/2013 8:00',
'31/12/2013 9:00', '31/12/2013 10:00', '31/12/2013 11:00', '31/12/2013
12:00', '31/12/2013 13:00', '31/12/2013 14:00', '31/12/2013 15:00',
'31/12/2013 16:00', '31/12/2013 17:00', '31/12/2013 18:00', '31/12/2013
19:00', '31/12/2013 20:00', '31/12/2013 21:00', '31/12/2013 22:00',
'31/12/2013 23:00', '01/01/2014 0:00')
as.Date(dates, format="%d/%m/%Y %H:%M")
[1] "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31"
[6] "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31"
[11] "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31"
[16] "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31"
[21] "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31" "2014-01-01"
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