Calculate year, month and time of day

Calculates year, month and the time of day categories based on input argument x with respect to the time zone specified by the user.

Usage

annex_add_year_month_and_tod(x, tz)

Arguments

x

object of class POSIXt.

tz

time zone (character). Important to properly calculate month and time of day.

Value

List with three elements year (integer), month (factor) and tod (factor).

Author

Reto Stauffer

Examples

x <- as.POSIXct("2022-01-01", tz = "UTC") + 0:10 * 3600
annex:::annex_add_year_month_and_tod(x, tz = "Europe/Berlin")
#> $year
#>  [1] 2022 2022 2022 2022 2022 2022 2022 2022 2022 2022 2022
#> Levels: 2022
#> 
#> $month
#>  [1] 1 1 1 1 1 1 1 1 1 1 1
#> Levels: all 1 2 3 4 5 6 7 8 9 10 11 12
#> 
#> $tod
#>  [1] 23-07 23-07 23-07 23-07 23-07 23-07 07-23 07-23 07-23 07-23 07-23
#> Levels: 23-07 07-23
#> 
annex:::annex_add_year_month_and_tod(x, tz = "US/Central")
#> $year
#>  [1] 2022 2022 2022 2022 2022 2022 2022 2022 2022 2022 2022
#> Levels: 2022
#> 
#> $month
#>  [1] 1 1 1 1 1 1 1 1 1 1 1
#> Levels: all 1 2 3 4 5 6 7 8 9 10 11 12
#> 
#> $tod
#>  [1] 23-07 23-07 23-07 23-07 23-07 23-07 23-07 07-23 07-23 07-23 07-23
#> Levels: 23-07 07-23
#>