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DDM (version 1.0-0)

yint: get interval as fraction of full years

Description

Either assume 365 days in the year, or get the precise duration.

Usage

yint(Day1, Month1, Year1, Day2, Month2, Year2, reproduce.matlab = FALSE,
  detect.mid.year = TRUE, detect.start.end = TRUE)

Arguments

Day1
Day of first date
Month1
Month of first date
Year1
Year of first date
Day2
Day of second date
Month2
Month of second date
Year2
Year of second date
reproduce.matlab
logical. default FALSE. Assume 365 days in all years?
detect.mid.year
logical. default TRUE. Should June 30 and July 1 be considered .5?
detect.start.end
logical. default TRUE. Should Jan 1 always be 0 and Dec 31 always be 1?

Value

decimal value of year fraction (can be greater than 1)