setSeasons: Define Seasons

In USGS-R/DVstats: Functions to manipulate daily-values data

Define Seasons

Description

Create a list that defines how seasons are defined for a particular application.

Usage

setSeasons(...)

Arguments

...	named arguments of months that define a season. See Details.

Details

At a minimum, the end month of the season must be given. If only the end month is given, then the seasons must be in sequential month order. For clarity, the beginning and end months, or all months, in order, for the season can be given. The season is allowed to overlap the calendar year.
Month abbreviations may be used instead of the full month name. See the documentation for month.abb.

Value

A list containing the name of the season with the first and last month.

Note

The season year is defined as the period from the first day of the starting month to the last day of the ending month. The season year is designated by the calendar year in which it ends. Thus, the season year starting December 1, 1998 and ending March 30, 1999, is the "1999 December-March season year."

See Also

seasonYear, month.abb

Examples

# Define seasons that might possibly be used in the northern U.S.
setSeasons(Winter="March", Spring="May", Summer="September", Fall="November")
# The same using begin and end months and abbreviations
setSeasons(Winter=c("Dec", "Mar"), Spring=c("Apr", "May"), 
Summer=c("Jun", "Sep"), Fall=c("Oct", "Nov"))

USGS-R/DVstats documentation built on Oct. 11, 2022, 6:03 a.m.