[R] Date functions

[Gabor Grothendieck]

# 1
d <- Sys.Date()
seq(d, len = 2, by = "2 months")[2]

# 2
as.numeric(format(d, "%w")) # 0 = Sunday
# or
format(d, "%a")

See R News 4/1 for more info and the table at the end of it in particular.

On Fri, Jan 30, 2009 at 9:54 AM, ehxpieterse
<eduard.pieterse at macquarie.com> wrote:
>
> Hi there,
>
> I am completely new to R and would like to do two things with date
> functions:
> 1. Compute any date from a specified starting point, e.g. x - 2 months
> 2. How do I determine the weekday of any given date?
>
> Thanks in advance
> --
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>
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