fConvertTimeToPosix

Convert different time formats to POSIX

fConvertTimeToPosix(Data.F, TFormat = TFormat.s, 
    Year = if (!missing(Year.s)) Year.s else "none", 
    Month = if (!missing(Month.s)) Month.s else "none", 
    Day = if (!missing(Day.s)) Day.s else "none", 
    Hour = if (!missing(Hour.s)) Hour.s else "none", 
    Min = if (!missing(Min.s)) Min.s else "none", 
    TName = if (!missing(TName.s)) TName.s else "DateTime", 
    TFormat.s, Year.s, Month.s, Day.s, Hour.s, 
    Min.s, TName.s, tz = "GMT")

Arguments

Data.F

Data frame with time columns to be converted

TFormat

Abbreviation for implemented time formats, see details

Year

Column name of year

Month

Column name of month

Day

Column name of day

Hour

Column name of hour

Min

Column name of min

TName

Column name of new column

TFormat.s

deprecated

Year.s

deprecated

Month.s

deprecated

Day.s

deprecated

Hour.s

deprecated

Min.s

deprecated

TName.s

deprecated

tz

timezone used to store the data. Advised to keep GMT to avoid daytime shifting issues

Details

The different time formats are converted to POSIX (GMT) and a 'TimeDate' column is prefixed to the data frame

Implemented time formats:

YDH

year, day of year, hour in decimal (e.g. 1998, 1, 10.5). The day (of year) format is (1-365 or 1-366 in leap years). The hour format is decimal time (0.0-23.5).

YMDH

year, month, day of month, hour in decimal (e.g. 1998, 1, 1, 10.5) The month format is (1-12) The day (of month) format is (1-31).

YMDHM

year, month, day of month, integer hour, minute (e.g. 1998, 1, 1, 10, 30) The hour format is (0-23) The minute format is (0-59)

Value

Data frame with prefixed POSIX time column.

Author

AMM, TW Department for Biogeochemical Integration at MPI-BGC, Jena, Germany <REddyProc-help@bgc-jena.mpg.de> [cph], Thomas Wutzler <twutz@bgc-jena.mpg.de> [aut, cre], Markus Reichstein <mreichstein@bgc-jena.mpg.de> [aut], Antje Maria Moffat <antje.moffat@bgc.mpg.de> [aut, trl], Olaf Menzer <omenzer@bgc-jena.mpg.de> [ctb], Mirco Migliavacca <mmiglia@bgc-jena.mpg.de> [aut], Kerstin Sickel <ksickel@bgc-jena.mpg.de> [ctb, trl], Ladislav <U+0160>igut <sigut.l@czechglobe.cz> [ctb]

See also

help_DateTimes

Examples

# See unit test in test_fConvertTimeToPosix for example