| round.POSIXt {base} | R Documentation |
Round / Truncate Data-Time Objects
Description
Round or truncate date-time objects.
Usage
## S3 method for class 'POSIXt'
round(x, units=c("secs", "mins", "hours", "days"))
trunc.POSIXt(x, units=c("secs", "mins", "hours", "days"))
Arguments
x |
an object inheriting from |
units |
one of the units listed. Can be abbreviated. |
Details
The time is rounded or truncated to the second, minute, hour or day. Timezones are only relevant to days, when midnight in the current timezone is used.
Value
An object of class "POSIXlt".
Note
trunc is not generic, so trunc.POSIXt has to be called
explicitly.
See Also
DateTimeClasses
Examples
round(.leap.seconds + 1000, "hour")
trunc.POSIXt(Sys.time(), "day")