Calendar: year-day

year_day() constructs a calendar vector from the Gregorian year and day of the year.

Usage

year_day(
  year,
  day = NULL,
  hour = NULL,
  minute = NULL,
  second = NULL,
  subsecond = NULL,
  ...,
  subsecond_precision = NULL
)

Arguments

year

[integer]

The year. Values [-32767, 32767] are generally allowed.

day

[integer / NULL]

The day of the year. Values [1, 366] are allowed.

hour

[integer / NULL]

The hour. Values [0, 23] are allowed.

minute

[integer / NULL]

The minute. Values [0, 59] are allowed.

second

[integer / NULL]

The second. Values [0, 59] are allowed.

subsecond

[integer / NULL]

The subsecond. If specified, subsecond_precision must also be specified to determine how to interpret the subsecond.

If using milliseconds, values [0, 999] are allowed.

If using microseconds, values [0, 999999] are allowed.

If using nanoseconds, values [0, 999999999] are allowed.

...

These dots are for future extensions and must be empty.

subsecond_precision

[character(1) / NULL]

The precision to interpret subsecond as. One of: "millisecond", "microsecond", or "nanosecond".

Value

A year-day calendar vector.

Details

Fields are recycled against each other.

Fields are collected in order until the first NULL field is located. No fields after the first NULL field are used.

Examples

# Just the year
x <- year_day(2019:2025)
x
#> <year_day<year>[7]>
#> [1] "2019" "2020" "2021" "2022" "2023" "2024" "2025"

year_day(2020, 1:10)
#> <year_day<day>[10]>
#>  [1] "2020-001" "2020-002" "2020-003" "2020-004" "2020-005" "2020-006"
#>  [7] "2020-007" "2020-008" "2020-009" "2020-010"

# Last day of the year, accounting for leap years
year_day(2019:2021, "last")
#> <year_day<day>[3]>
#> [1] "2019-365" "2020-366" "2021-365"

# Precision can go all the way out to nanosecond
year_day(2019, 100, 2, 40, 45, 200, subsecond_precision = "nanosecond")
#> <year_day<nanosecond>[1]>
#> [1] "2019-100T02:40:45.000000200"