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Date to season (character)

Source: R/conversion_season.R
date_to_season_c.Rd

Maps a date to the surveillance season it belongs to, written as "yyyy/yyyy".

Usage

date_to_season_c(x)

Arguments

x

A Date object, or a character string in the format 'yyyy-mm-dd'.

Value

Season as a character vector (e.g. "2020/2021").

Details

The date is first converted to an ISO yearweek with date_to_isoyearweek_c() and then to a season with isoyearweek_to_season_c(). Seasons start at ISO week 35, so dates in early January belong to the season that began the previous calendar year.

See also

date_to_seasonweek_n() for the week within that season, and isoyearweek_to_season_c() to start from an ISO yearweek instead. vignette("season", package = "cstime") for worked season week conversions. No vignette runs this function.

Examples

date_to_season_c(c("2021-01-01", "2021-12-01"))
#> [1] "2020/2021" "2021/2022"
date_to_season_c(as.Date("2021-09-01"))
#> [1] "2021/2022"