as.interval
From lubridate v1.2.0
by Garrett Grolemund
Change an object to an interval.
as.interval changes difftime, Duration, Period and numeric class objects to intervals that begin at the specified date-time. Numeric objects are first coerced to timespans equal to the numeric value in seconds.
Usage
as.interval(x, start)Arguments
- x
- a duration, difftime, period, or numeric object that describes the length of the interval
- start
- a POSIXt or Date object that describes when the interval begins
Details
as.interval can be used to create accurate
transformations between Period objects, which measure
time spans in variable length units, and Duration
objects, which measure timespans as an exact number of
seconds. A start date- time must be supplied to make the
conversion. Lubridate uses this start date to look up how
many seconds each variable length unit (e.g. month, year)
lasted for during the time span described. See
as.duration, as.period.
Value
- an interval object
See Also
Examples
diff <- new_difftime(days = 31) #difftime
as.interval(diff, ymd("2009-01-01"))
# 2009-01-01 UTC--2009-02-01 UTC
as.interval(diff, ymd("2009-02-01"))
# 2009-02-01 UTC--2009-03-04 UTC
dur <- new_duration(days = 31) #duration
as.interval(dur, ymd("2009-01-01"))
# 2009-01-01 UTC--2009-02-01 UTC
as.interval(dur, ymd("2009-02-01"))
# 2009-02-01 UTC--2009-03-04 UTC
per <- new_period(months = 1) #period
as.interval(per, ymd("2009-01-01"))
# 2009-01-01 UTC--2009-02-01 UTC
as.interval(per, ymd("2009-02-01"))
# 2009-02-01 UTC--2009-03-01 UTC
as.interval(3600, ymd("2009-01-01")) #numeric
# 2009-01-01 UTC--2009-01-01 01:00:00 UTCCommunity examples
Looks like there are no examples yet.