Skip to content

Grouping: iso-year-week-day

Source: R/iso-year-week-day.R
iso-year-week-day-group.Rd

This is a iso-year-week-day method for the calendar_group() generic.

Grouping for a iso-year-week-day object can be done at any precision, as long as x is at least as precise as precision.

Usage

# S3 method for clock_iso_year_week_day
calendar_group(x, precision, ..., n = 1L)

Arguments

x

[clock_iso_year_week_day]

A iso-year-week-day vector.

precision

[character(1)]

One of:

  • "year"

  • "week"

  • "day"

  • "hour"

  • "minute"

  • "second"

  • "millisecond"

  • "microsecond"

  • "nanosecond"

...

These dots are for future extensions and must be empty.

n

[positive integer(1)]

A single positive integer specifying a multiple of precision to use.

Value

x grouped at the specified precision.

Examples

x <- iso_year_week_day(2019, 1:52)

# Group by 3 ISO weeks
calendar_group(x, "week", n = 3)
#> <iso_year_week_day<week>[52]>
#>  [1] "2019-W01" "2019-W01" "2019-W01" "2019-W04" "2019-W04" "2019-W04"
#>  [7] "2019-W07" "2019-W07" "2019-W07" "2019-W10" "2019-W10" "2019-W10"
#> [13] "2019-W13" "2019-W13" "2019-W13" "2019-W16" "2019-W16" "2019-W16"
#> [19] "2019-W19" "2019-W19" "2019-W19" "2019-W22" "2019-W22" "2019-W22"
#> [25] "2019-W25" "2019-W25" "2019-W25" "2019-W28" "2019-W28" "2019-W28"
#> [31] "2019-W31" "2019-W31" "2019-W31" "2019-W34" "2019-W34" "2019-W34"
#> [37] "2019-W37" "2019-W37" "2019-W37" "2019-W40" "2019-W40" "2019-W40"
#> [43] "2019-W43" "2019-W43" "2019-W43" "2019-W46" "2019-W46" "2019-W46"
#> [49] "2019-W49" "2019-W49" "2019-W49" "2019-W52"

y <- iso_year_week_day(2000:2020, 1, 1)

# Group by 2 ISO years
calendar_group(y, "year", n = 2)
#> <iso_year_week_day<year>[21]>
#>  [1] "2000" "2000" "2002" "2002" "2004" "2004" "2006" "2006" "2008" "2008"
#> [11] "2010" "2010" "2012" "2012" "2014" "2014" "2016" "2016" "2018" "2018"
#> [21] "2020"