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Convert to year-week-day

Source: R/week-year-week-day.R
as_year_week_day.Rd

as_year_week_day() converts a vector to the year-week-day calendar. Time points, Dates, POSIXct, and other calendars can all be converted to year-week-day.

Usage

as_year_week_day(x, ..., start = NULL)

Arguments

x

[vector]

A vector to convert to year-week-day.

...

These dots are for future extensions and must be empty.

start

[integer(1) / NULL]

The day to consider the start of the week. 1 = Sunday and 7 = Saturday.

If NULL:

  • If x is a year-week-day, it will be returned as is.

  • Otherwise, a start of Sunday will be used.

Value

A year-week-day vector.

Examples

# From Date
as_year_week_day(as.Date("2019-01-01"))
#> <year_week_day<Sunday><day>[1]>
#> [1] "2019-W01-3"
as_year_week_day(as.Date("2019-01-01"), start = clock_weekdays$monday)
#> <year_week_day<Monday><day>[1]>
#> [1] "2019-W01-2"

# From POSIXct, which assumes that the naive time is what should be converted
as_year_week_day(as.POSIXct("2019-01-01 02:30:30", "America/New_York"))
#> <year_week_day<Sunday><second>[1]>
#> [1] "2019-W01-3T02:30:30"

# From other calendars
as_year_week_day(year_quarter_day(2019, quarter = 2, day = 50))
#> <year_week_day<Sunday><day>[1]>
#> [1] "2019-W21-2"