Calculate number of quarters between two dates yyyyQq, yyyy.q or yyyy-mm-dd

Usage

nqtrs(dat1 = "", dat2 = "")

Arguments

dat1: date of period start (string: yyyyQq, yyyy.q, or yyyy-mm-dd)
dat2: date of period end (string: yyyyQq, yyyy.q, or yyyy-mm-dd)

Value

numeric length of date range in quarters

Details

The endpoints are included in the result so subtract one for time difference. Also, the result is rounded down so partial quarters are not counted. See examples.

Examples

nqtrs("2010Q1", "2020Q4")
#> [1] 44
nqtrs(2010.1, 2020.4)
#> [1] 44
nqtrs("2010-01-01", "2020-10-01")
#> [1] 44
nqtrs("2010-02-01", "2020-11-01")
#> [1] 44
nqtrs("2010-02-01", "2020-10-01")
#> [1] 43
nqtrs("2010-01-01", "2020-11-01")
#> [1] 44