Description Usage Arguments Value Author(s) Examples
Subtract numerics from mondates.
When units = "months" and the
numeric is a whole number
the result has the same
day of the month subject to the number of days in the month,
approach of representing days as fractional months.
Anything allowed by
If FALSE, the result will have the same day of the month subject to
the numbere of days in the month.
If TRUE, the day of the month of the result will be the last day of the
1 2 3 4 5 6
x <- mondate(0:12) subtract(x, 1) # The third date will the the 29th of March x <- mondate.ymd(2013, 2:12, 15) subtract(x, 1) # Always the 15th of the month. Compare to ... x - 1 stopifnot(subtract(x, 1, units = "months") == mondate.ymd(2013, 1:11, 15))
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