resourcecode (version 0.5.3)

cut_seasons: Get season from date time object

Description

Get season from date time object

Usage

cut_seasons(
  datetime,
  definition = "meteorological",
  hemisphere = "northern",
  labels = NULL
)

Value

a Factor vector with 4 levels depending on the definitions (and labels if provided)

Arguments

datetime

a POSIXct vector from with the season is constructed

definition

the definition used to compute the season. See details section.

hemisphere

in the Southern hemisphere, seasons are reversed compared to the Northern one.

labels

optional, a character vector of length fours with the seasons' names.

Details

Available Definitions:

• meteorological: Standard seasons (Dec-Feb = Winter, etc.)

• astronomical: Based on equinoxes/solstices

• djf: Dec-Jan-Feb, Mar-Apr-May, Jun-Jul-Aug, Sep-Oct-Nov

• jfm: Jan-Feb-Mar, Apr-May-Jun, Jul-Aug-Sep, Oct-Nov-Dec

• fma: Feb-Mar-Apr, May-Jun-Jul, Aug-Sep-Oct, Nov-Dec-Jan

• amj, jas, ond: Alternative starting points for quarterly seasons

Examples

dates <- seq(
  from = as.POSIXct("2023-01-15"),
  to = as.POSIXct("2023-12-15"),
  by = "month"
)
cut_seasons(dates)