Get Season

Returns an ordered factor the user specified seasons. If the first month of the first season isn't January (1L), then the last season is considered to wrap into the following year.

Usage

ps_get_season(
  x,
  seasons = c(Spring = 3L, Summer = 6L, Autumn = 9L, Winter = 12L)
)

Arguments

x

A Date or POSIXt vector

seasons

A uniquely named integer vector of the first month of each season.

Value

An ordered factor of the seasons.

Examples

ps_get_season(as.Date(c("2001-01-01", "2001-02-28", "2012-09-01", "2012-12-01")))
#> [1] Winter Winter Autumn Winter
#> Levels: Winter < Spring < Summer < Autumn
ps_get_season(as.Date(c("2001-01-01", "2001-02-28", "2012-09-01", "2012-12-01")),
season = c(Monsoon = 2L, `Dry Period` = 6L))
#> [1] Dry Period Monsoon    Dry Period Dry Period
#> Levels: Dry Period < Monsoon