year

0th

Percentile

Get/set years component of a date-time

Date-time must be a POSIXct, POSIXlt, Date, Period or any other object convertible to POSIXlt.

isoyear() returns years according to the ISO 8601 week calendar.

epiyear() returns years according to the epidemilogical week calendars.

Keywords
manip, methods, utilities, chron
Usage
year(x)

year(x) <- value

isoyear(x)

epiyear(x)

Arguments
x

a date-time object

value

a numeric object

Details

year does not yet support years before 0 C.E.

Value

the years element of x as a decimal number

References

https://en.wikipedia.org/wiki/ISO_week_date

Aliases
  • year
  • year<-
  • isoyear
  • epiyear
Examples
# NOT RUN {
x <- ymd("2012-03-26")
year(x)
year(x) <- 2001
year(x) > 1995
# }
Documentation reproduced from package lubridate, version 1.7.9.2, License: GPL (>= 2)

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