usCreateSeasonFactorMonth: usCreateSeasonFactorMonth

In REddyProc: Data processing and plotting utilities of (half-)hourly eddy-covariance measurements

Description

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

Usage

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, specifying the center-time of each record
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.

REddyProc internally works with a timestamp 15 minutes after the start of each half hour. When providing the dates argument, user may shift the start time by dates=myDataset$DateTime+15*60

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

REddyProc documentation built on May 2, 2019, 5:19 p.m.