Turn dates into age
What is the frame of reference to determine the age? Check out 'difftime'.
On Sun, Nov 8, 2009 at 1:50 PM, frenchcr <frenchcr at btinternet.com> wrote:
Ive got a big column of dates (also some fields dont have a date so they have NA instead), that i have converted into date format as so... dates<-as.character(data[,"date_commissioned"]); # converted dates to characters dates[1:10] [1] "19910101" "19860101" "19910101" "19860101" "19910101" "19910101" "19910101" "19910101" "19910101" "19910101" dateObs <- as.Date(dates,format="%Y%m%d") dateObs[1:10] [1] "1991-01-01" "1986-01-01" "1991-01-01" "1986-01-01" "1991-01-01" "1991-01-01" "1991-01-01" "1991-01-01" "1991-01-01" "1991-01-01" Now i need to turn the dates into AGE, how do i do it? Im not worried about fractions of years, whole years would do. -- View this message in context: http://old.nabble.com/Turn-dates-into-age-tp26256656p26256656.html Sent from the R help mailing list archive at Nabble.com.
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