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changing date by +/- days
2012 Oct 30
2
changing date by +/- days
Hi, Let say I have a date variable like this: structure(1243792800, class = c("POSIXct", "POSIXt"), tzone = "GMT") [1] "2009-05-31 18:00:00 GMT" How can I make it 10 days prior, so: [1] "2009-05-21 18:00:00 GMT" I'm randomly selecting dates from a list and want a second value a set # of days either before or after. Thanks ahead of time.