usCreateSeasonFactorMonth

Description

calculate factors to denote the season for uStar-Filtering by specifying starting months, with continuous seasons spanning year boundaries

Usage

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usCreateSeasonFactorMonth(dates, month = as.POSIXlt(dates)$mon + 
    1L, year = as.POSIXlt(dates)$year + 1900L, startMonth = c(3, 
    6, 9, 12))

Arguments

dates

POSIXct vector of length of the data set to be filled

month

integer (1-12) vector of length of the data set to be filled, specifying the month for each record

year

integer vector of length of the data set to be filled, specifying the year

startMonth

integer vector specifying the starting month for each season, counting from one. Default is (Dez,Jan,Feb)(Mar,April,May)(June,July,August),(Sept,Okt,Nov)

Details

If Jan is not a starting month, then the first months of each year will be part of the last period in the year. E.g. with the default the fourth period of the first year consists of Jan,Feb,Dec.

Value

Integer vector length(dates), with each unique value representing one season

Author(s)

TW (Department for Biogeochemical Integration at MPI-BGC, Jena, Germany)

See Also

usCreateSeasonFactorMonthWithinYear, usCreateSeasonFactorYday, usCreateSeasonFactorYdayYear

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