Then, you can try:
For example:
head(df)
date value
1 1990-01-01 4.716572
2 1990-02-01 3.418355
3 1990-03-01 1.982209
4 1990-04-01 3.974942
5 1990-05-01 6.624222
6 1990-06-01 5.729092
max(as.Date(df$date))
or if you interest is in the month only:
max(format.Date(as.Date(df$date), "%m-%d"))
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
On 29/08/2007, Shubha Vishwanath Karanth <[EMAIL PROTECTED]> wrote:
>
> But my dataset is a data frame
.
>
>
>
> BR, Shubha
> ------------------------------
>
> *From:* Henrique Dallazuanna [mailto:[EMAIL PROTECTED]
> *Sent:* Wednesday, August 29, 2007 5:12 PM
> *To:* Shubha Vishwanath Karanth
> *Cc:* r-help@stat.math.ethz.ch
> *Subject:* Re: [R] Month end calculations
>
>
>
> Hi,
>
> Perhaps if object is of the type 'ts', the command 'end' can usefully.
>
> --
> Henrique Dallazuanna
> Curitiba-Paraná-Brasil
> 25° 25' 40" S 49° 16' 22" O
>
> On 29/08/2007, *Shubha Vishwanath Karanth* <[EMAIL PROTECTED]>
> wrote:
>
> Hi R users,
>
>
>
> Is there a function in R, which does some calculation only for the month
> end in a daily data?... In other words, is there a command in R,
> equivalent to "last." function in SAS?
>
>
>
> BR, Shubha
>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>
> and provide commented, minimal, self-contained, reproducible code.
>
>
>
[[alternative HTML version deleted]]
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