quarter {lubridate} | R Documentation |
Quarters divide the year into fourths. Semesters divide the year into halfs.
quarter( x, type = "quarter", fiscal_start = 1, with_year = identical(type, "year.quarter") ) semester(x, with_year = FALSE)
x |
a date-time object of class POSIXct, POSIXlt, Date, chron, yearmon, yearqtr, zoo, zooreg, timeDate, xts, its, ti, jul, timeSeries, fts or anything else that can be converted with as.POSIXlt |
type |
the format to be returned for the quarter. Can be one one of "quarter" - return numeric quarter (default), "year.quarter" return fractional numeric year.quarter, "date_first" or "date_last" which return the date at the quarter's start end end. |
fiscal_start |
numeric indicating the starting month of a fiscal year. |
with_year |
logical indicating whether or not to include the quarter or
semester's year (deprecated; use the |
numeric or a vector of class POSIXct if type
argument is
date_first
or date_last
x <- ymd(c("2012-03-26", "2012-05-04", "2012-09-23", "2012-12-31")) quarter(x) quarter(x, type = "year.quarter") quarter(x, type = "year.quarter", fiscal_start = 11) quarter(x, type = "date_first", fiscal_start = 11) quarter(x, type = "date_last", fiscal_start = 11) semester(x) semester(x, with_year = TRUE)