Convert time-slices to date-time, extract year, month, day of the year, or hour

tsl2dtm(
  tsl,
  format = tsl_guess_format(tsl),
  tmz = "UTC",
  year = NULL,
  mday = NULL
)

tsl2year(tsl, return.null = T)

tsl2yday(tsl, return.null = T)

tsl2hour(tsl, return.null = T)

tsl2month(tsl, return.null = T)

Arguments

tsl	character vector with time-slices
format	character, format of the slices
tmz	time-zone
year	year, used when time-slices don't store year
mday	day of month, for time slices without the information
return.null	logical, valid for the cased then all values are NA, then NULL will be returned if return.null = TRUE,

Value

Vector in Date-Time format

Functions

tsl2year: Extract year from time-slices
tsl2yday: Extract the day of the year from time-slices
tsl2hour: Extract hour from time-slices
tsl2month: Extract month from time-slices

Examples

tsl <- c("y2007_d365_h15", NA, "d151_h22", "d001", "m10_h12")
tsl2dtm(tsl[1])
#> [1] "2007-12-31 15:00:00 UTC"
tsl2dtm(tsl[1:2])
#> Warning:  1 failed to parse.
#> [1] "2007-12-31 15:00:00 UTC" NA                       
tsl2dtm(tsl[2])
#> NULL
tsl2dtm(tsl[3])
#> NULL
tsl2dtm(tsl[4])
#> NULL
tsl2dtm(tsl[3], year = 2010)
#> [1] "2010-05-31 22:00:00 UTC"
tsl2dtm(tsl[4], year = 1900)
#> [1] "1900-01-01 UTC"
tsl2dtm(tsl[3:4], year = 1900)
#> NULL
tsl2year(tsl)
#> [1] 2007   NA   NA   NA   NA
tsl
#> [1] "y2007_d365_h15" NA               "d151_h22"       "d001"          
#> [5] "m10_h12"       
tsl2yday(tsl)
#> [1] 365  NA 151   1  NA
tsl
#> [1] "y2007_d365_h15" NA               "d151_h22"       "d001"          
#> [5] "m10_h12"       
tsl2hour(tsl)
#> [1] 15 NA 22 NA 12
tsl
#> [1] "y2007_d365_h15" NA               "d151_h22"       "d001"          
#> [5] "m10_h12"       
tsl2month(tsl)
#> [1] NA NA NA NA 10