yint2 {DDM}

get the time interval without having to specify so many arguments

Description

We accept dates, and fake them otherwise. Dates must be unique. Iterate over data if necessary for multiple intervals.

Usage

yint2(X)

Arguments

X

data.frame with at least columns $date1 and $date2, or $year1 and $year2.

Value

an decimal year value of the time between two dates.