Sequence of time(hour)

Question

I tried:

seq(
     from=as.POSIXct("2012-1-1 0", tz="UTC"),
     to=as.POSIXct("2012-1-3 23", tz="UTC"),
     by="hour"
   )

But I only get 1 hour(0:00:00) of the last day instead of 24 hours, actually any hour of the day resulted in only one hour(0:00:00), and I do want to have 2012-1-4.

score 25 · Accepted Answer · answered Aug 20 '12 at 02:39

25

Specify the time in full?

seq(
     from=as.POSIXct("2012-1-1 0:00", tz="UTC"),
     to=as.POSIXct("2012-1-3 23:00", tz="UTC"),
     by="hour"
   )

answered Aug 20 '12 at 02:39

thelatemail

91,185
12
128
188

score 5 · Answer 2 · answered Aug 20 '12 at 02:39

5

You did not use a standard format for the dates. See ?as.POSIXct.

Try this

seq(from=as.POSIXct("2012-01-01 00:00:00", tz="UTC"), 
    to=as.POSIXct("2012-01-03 23:00:00", tz="UTC"), by="hour")

answered Aug 20 '12 at 02:39

GSee

48,880
13
125
145

score 5 · Answer 3 · answered Aug 20 '12 at 04:19

5

You could specify a format:

seq(
     from=as.POSIXct("2012-1-1 0","%Y-%m-%d %H", tz="UTC"),
     to=as.POSIXct("2012-1-3 23", "%Y-%m-%d %H", tz="UTC"),
     by="hour"
   )

answered Aug 20 '12 at 04:19

IRTFM

258,963
21
364
487

Is there a by="half hour" option? – bmc Jul 11 '17 at 19:59
"by = 30 min" ended up being more successful. – IRTFM Jul 12 '17 at 18:00

Sequence of time(hour)

3 Answers3

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