[R] subtract a time period from a date

[Rui Barradas]

Hello,

I don't get it, this seems to work as expected.

d <- as.Date("2011-05-01 CEST")
d - 30
[1] "2011-04-01"


Hope this helps,

Rui Barradas

Em 30-10-2012 10:25, paladini escreveu:
> Hello everybody,
> how can I reduce e.g. 30 days from a date?
> When I do  the following  "2011-05-01 CEST" -"2011-04-01 CEST" I get: 
> "Time difference of 30 days"
> an thats fine.
>
> But when I try "2011-05-01 CEST" - 30 I get nonsense.
> So how can I subtract some days, month or years from a date?
>
>
>
> thanking you in anticipation
>
>
> Claudia Paladini
>
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