season_year: Value for season year for observation

In jcoliver/weathercommand: Summary Statistics for Weather Data

Description

Value for season year for observation

Usage

season_year(x, start_month, end_month, start_day = 15, end_day = start_day)

Arguments

x	vector of Date data
start_month	numeric starting month defining season (inclusive)
end_month	numeric ending month defining season (inclusive)
start_day	numeric day of starting month defining season (inclusive); defaults to 15
end_day	numeric day of ending month defining season (inclusive); defaults to start_day

Value

integer vector of season year to which observation corresponds to. For seasons that do not cross the new year, this is simply the year the observation was made. For seasons that do include the new year (e.g. a season starts in November and ends in the subsequent March), season_year is defined as the year in which the season starts. That is, for a season spanning November through March, the value of season_year for observations in January, February, and March is the prior year (e.g. season_year for an observation on 1983-02-01 for a season spanning November through March would be 1984).

Examples

## Not run: 
dates <- as.Date(x = c("1983-12-15", "1984-03-01", "1984-12-15", "1985-03-01"))
# identify season year, where season is defined as 30 November through
# 15 March
sy <- season_year(x = dates,
                  start_month = 11,
                  end_month = 3,
                  start_day = 30,
                  end_day = 15)

## End(Not run)

jcoliver/weathercommand documentation built on Sept. 12, 2021, 3:28 a.m.