This is a year-day method for the calendar_widen()
generic. It
widens a year-day vector to the specified precision
.
Usage
# S3 method for clock_year_day
calendar_widen(x, precision)
Arguments
- x
[clock_year_day]
A year-day vector.
- precision
[character(1)]
One of:
"year"
"day"
"hour"
"minute"
"second"
"millisecond"
"microsecond"
"nanosecond"
Examples
# Year precision
x <- year_day(2019)
x
#> <year_day<year>[1]>
#> [1] "2019"
# Widen to day precision
calendar_widen(x, "day")
#> <year_day<day>[1]>
#> [1] "2019-001"
# Or second precision
sec <- calendar_widen(x, "second")
sec
#> <year_day<second>[1]>
#> [1] "2019-001T00:00:00"
# Second precision can be widened to subsecond precision
milli <- calendar_widen(sec, "millisecond")
micro <- calendar_widen(sec, "microsecond")
milli
#> <year_day<millisecond>[1]>
#> [1] "2019-001T00:00:00.000"
micro
#> <year_day<microsecond>[1]>
#> [1] "2019-001T00:00:00.000000"
# But once you have "locked in" a subsecond precision, it can't
# be widened again
try(calendar_widen(milli, "microsecond"))
#> Error in calendar_widen(milli, "microsecond") :
#> Can't widen a subsecond precision `x` ("millisecond") to another
#> subsecond precision ("microsecond").