[R] time between two dates

[Berend Hasselman]

On 09-03-2012, at 10:04, carol white wrote:

> Dear All,
> It may be a trivial question but how to determine the number of days between two dates? What I want to do is to subtract two dates by a function which returns the number of days between these two dates. 
> 
> 11.11.2008-11.11.2006 ~= 730 days
> 

x <- as.Date(c("11-11-2008","11-11-2006"),format="%d-%m-%Y")
difftime(x[1],x[2],units="days")

Berend