Time between dates

Calculates time between two date vectors.

Usage

time(start, stop, units = "weeks")

Arguments

start

A date vector.

stop

A date vector.

units

A character string of "seconds", "minutes", "hours", "days", "weeks", "months", "years".

Value

numeric vector

Examples

#----------------------------------------------------------------------------
# time() examples.
#----------------------------------------------------------------------------
library(bkmisc)

time1 <- as.Date(c("1992-02-27", "1992-02-27", "1992-01-14", "1992-02-28", "1992-02-01"))
time2 <- as.Date(c("1992-02-28", "1992-03-27", "1992-07-14", "1992-04-15", "1993-02-01"))
time3 <- as.POSIXct(c("1992-02-27", "1992-02-27", "1992-01-14", "1992-02-28", "1992-02-01"))
time4 <- as.POSIXct(c("1992-02-28", "1992-03-27", "1992-07-14", "1992-04-15", "1993-02-01"))

time(start = time1, stop = time2, units = "days")
#> [1]   1  29 182  47 366
time(start = time3, stop = time4, units = "months")
#> [1]  0.03285421  0.95277207  5.97809719  1.54277892 12.02464066
time(start = time1, stop = time4, units = "years")
#> [1] 0.003308236 0.079968058 0.498745152 0.129135295 1.002623774