dates | R Documentation |
Helper functions for manipulation of dates, includding conversion between (day of year) (DOY) to date and back, and extraction of parts of a date.
dateFromDoy(doy, year)
doyFromDate(date)
dayFromDate(date)
monthFromDate(date)
yearFromDate(date)
isLeapYear(year)
daysInYear(year)
doy |
integer. Day of the year (1..365) or (1..366) for leap years |
year |
integer. Year, e.g. 1982 |
date |
Date object or character formatted 'yyyy-mm-dd', e.g. '1982-11-23' |
integer or Date
doy <- 88
year <- 1970
date <- dateFromDoy(doy, year)
date
dateFromDoy(-15, 2000)
doyFromDate(date)
isLeapYear(2000)
daysInYear(2000)
daysInYear(1999)
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