Converts a date to its calendar (Gregorian) year, returned as a character string.
Details
Unlike the ISO year (see date_to_isoyear_c()), the calendar year is taken
directly from the date, so 2021-01-01 is calendar year "2021".
See also
vignette("date_conversion", package = "cstime") for worked date,
ISO year and ISO week conversions. No vignette runs this function.
Other date-to-character converters:
date_to_calmonth_c(),
date_to_calyearmonth_c(),
date_to_isoquarter_c(),
date_to_isoweek_c(),
date_to_isoyear_c(),
date_to_isoyearquarter_c(),
date_to_isoyearweek_c()
Examples
date_to_calyear_c(as.Date("2021-08-11"))
#> [1] "2021"
date_to_calyear_c("2021-01-01")
#> [1] "2021"
