[R] changing date by +/- days

[chuck.01]

got it, sorry!

structure(1243792800, class = c("POSIXct", "POSIXt"), tzone =
"GMT")-(60*60*24*10)




chuck.01 wrote
> 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.





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