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)
integer, month (1-12).
integer, day of the month (1-31, depending on the month).
integer, either 2- or 4-digit year. If two-digit number, will add 1900 onto it, depending on range.
cutoff for method to know if to convert to 4-digit year.
A date value.
An object.
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.
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.
# NOT RUN {
mdy.Date(9, 2, 2013)
tmp <- mdy.Date(9, 2, 2013)
Date.mdy(tmp)
is.Date(tmp)
# }
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