Package index • datey

Date and duration methods

start_day() mid_day() end_day(): Create a datey for the start, middle or end of a day
as_start_day() as_mid_day() as_end_day(): Create a datey aligned to the start, middle or end of the day specified by a fractional calendar year or another date type.
datey(): Create a datey from a calendar year (including its fractional part) or another date type
`$`(<datey>): Extract year, month, day or day_fraction from a datey
to_ymdf() from_ymdf(): Create or decompose a datey using calendar year, month, day and day fraction
durationy(): Create a durationy from an annual duration
seq(<datey>) seq(<durationy>): Create datey or durationy sequence vector

is_datey() is_datey_interval() is_durationy(): Is x a datey, durationy or datey_interval?
is_start_day() is_mid_day(): Is a datey the start (or end) or middle of a day?
is_leap_year(): Is x a leap year?

as.double(<datey>) as.integer(<datey>): Convert a datey to calendar years (including fractional part)
as.double(<durationy>) as.integer(<durationy>): Convert a durationy to duration in years

Ops(<datey_type>): Operators for datey, durationy and datey_interval
mean(<datey>) mean(<durationy>): Mean value of datey or durationy
Summary(<datey>) Summary(<durationy>): Minimum, maximum or range of datey or durationy

datey_interval() `%to%`: Create a datey_interval
is_proper() all_proper() is_collapsed() all_collapsed() any_collapsed(): Properties of an interval.
`$`(<datey_interval>): Get the start, end or duration of a datey_interval
interval_includes() `%includes%`: Whether a datey_interval includes a datey
all_of_time: All valid datey calendar years, i.e. 1000 to 2999 inclusive.

datey(<character>): Parse text as a datey
durationy(<character>): Parse text as a durationy
as.character(<datey>) format(<datey>) print(<datey>): Format or print a datey
as.character(<durationy>) format(<durationy>) print(<durationy>): Format or print a durationy
as.character(<datey_interval>) format(<datey_interval>) print(<datey_interval>): Format or print a datey_interval

c(<datey>) c(<durationy>) c(<datey_interval>): Combine multiple datey, durationy or datey_interval vectors
`[`(<datey>) `[`(<durationy>) `[`(<datey_interval>) `[<-`(<datey>) `[<-`(<durationy>) `[<-`(<datey_interval>): Subset datey, durationy or datey_interval vectors

is.na(<datey>) anyNA(<datey>) is.na(<datey_interval>) anyNA(<datey_interval>) is.na(<durationy>) anyNA(<durationy>): Whether datey or durationy are NA
NA_datey_ NA_datey_interval_ NA_durationy_: The datey, durationy and datey_interval versions of NA
valid_years_start valid_years_end valid_duration_years_max: Integer constants