| trunc.POSIXt {Hmisc} | R Documentation |
trunc.POSIXt returns the date truncated to the specified unit.
ceiling.POSIXt returns next ceiling of the date at the unit selected in
units.
floor.POSIXt trunk.POSIXt by another name.
round.POSIXt returns the date or time value rounded to nearest
specified unit selected in digits.
ceil(x, units)
## Default S3 method:
ceil(x, units)
## S3 method for class 'POSIXt':
trunc(x, units = c("secs", "mins", "hours", "days", "months", "years"))
## S3 method for class 'POSIXt':
ceil(x, units = c("secs", "mins", "hours", "days", "months", "years"))
## S3 method for class 'POSIXt':
round(x, digits = c("secs", "mins", "hours", "days", "months", "years"))
x |
date to be floored or ceilinged |
units |
unit to that is is rounded up or down to. |
digits |
same as units but different name to be compatible
with round generic.
|
An object of class POSIXlt.
Charles Dupont
date <- ISOdate(1832, 7, 12) ceil(date, units='months') # '1-8-1832' trunc(date, units='years') # '1-1-1832' round.POSIXt(date, digits='months') # '1-7-1832'