ISO year to last ISO yearweek (character)

Returns the last ISO yearweek of a given ISO year as a "yyyy-ww" string.

Usage

isoyear_to_last_isoyearweek_c(x)

# Default S3 method
isoyear_to_last_isoyearweek_c(x)

# S3 method for class 'character'
isoyear_to_last_isoyearweek_c(x)

# S3 method for class 'numeric'
isoyear_to_last_isoyearweek_c(x)

Arguments

x

ISO year as a number or character string, e.g. 2020 or "2020".

Value

Last ISO yearweek of the year as a character vector (e.g. "2020-53").

Details

Most ISO years have 52 weeks, so the result is usually "yyyy-52". ISO years that contain 53 weeks (such as 2020) instead return "yyyy-53". The year is accepted as either a number or a character string.

See also

isoyear_to_last_isoweek_n() and isoyear_to_last_date() answer the same question as a week number and as a date. vignette("date_conversion", package = "cstime") for worked date, ISO year and ISO week conversions. No vignette runs this function.

Examples

isoyear_to_last_isoyearweek_c(c(2019, 2020, 2021))
#> [1] "2019-52" "2020-53" "2021-52"
isoyear_to_last_isoyearweek_c("2020")
#> [1] "2020-53"