Convert numeric dates to Date object, and vice versa — mdy.Date • arsenal

Convert numeric dates for month, day, and year to Date object, and vice versa.

mdy.Date(month, day, year, yearcut = 120)

Date.mdy(date)

is.Date(x)

Arguments

month: integer, month (1-12).
day: integer, day of the month (1-31, depending on the month).
year: integer, either 2- or 4-digit year. If two-digit number, will add 1900 onto it, depending on range.
yearcut: cutoff for method to know if to convert to 4-digit year.
date: A date value.
x: An object.

Value

mdy.Date returns a Date object, and Date.mdy returns a list with integer values for month, day, and year. is.Date returns a single logical value.

Details

Test if an object is a date.

More work may need to be done with yearcut and 2-digit years. Best to give a full 4-digit year.

See also

Date, DateTimeClasses

Examples

mdy.Date(9, 2, 2013)
#> [1] "2013-09-02"

tmp <- mdy.Date(9, 2, 2013)
Date.mdy(tmp)
#> $month
#> [1] 9
#> 
#> $day
#> [1] 2
#> 
#> $year
#> [1] 2013
#> 

is.Date(tmp)
#> [1] TRUE