Dear R forum
I have a data.frame
df = data.frame(dates = c("4/15/2013", "4/14/2013",
"4/13/2013", "4/12/2013"), values = c(47, 38, 56, 92))
I need to to create a vector by repeating the dates as
"Current_date", 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013,
"Current_date", 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013,
Current_date, 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013
i.e. I need to create a new vector as given below which I need to use for some
other purpose.
Current_date
4/15/2013
4/14/2013
4/13/2013
4/12/2013
Current_date
4/15/2013
4/14/2013
4/13/2013
4/12/2013
Current_date
4/15/2013
4/14/2013
4/13/2013
4/12/2013
Is it possible to construct such a
column?
Regards
Katherine
[[alternative HTML version deleted]]
?rep On Wed, Apr 17, 2013 at 11:11 AM, Katherine Gobin <katherine_gobin@yahoo.com> wrote:> Dear R forum > > I have a data.frame > > df = data.frame(dates = c("4/15/2013", "4/14/2013", "4/13/2013", > "4/12/2013"), values = c(47, 38, 56, 92)) > > I need to to create a vector by repeating the dates as > > "Current_date", 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013, > "Current_date", 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013, Current_date, > 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013 > > i.e. I need to create a new vector as given below which I need to use for > some other purpose. > > Current_date > 4/15/2013 > 4/14/2013 > 4/13/2013 > 4/12/2013 > Current_date > 4/15/2013 > 4/14/2013 > 4/13/2013 > 4/12/2013 > Current_date > 4/15/2013 > 4/14/2013 > 4/13/2013 > 4/12/2013 > > Is it possible to construct such a > column? > > Regards > > Katherine > > > > [[alternative HTML version deleted]] > > > ______________________________________________ > R-help@r-project.org 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]]
Hello,
Try the following.
rep(c("Current_date", as.character(df$dates)), 3)
Hope this helps,
Rui Barradas
Em 17-04-2013 10:11, Katherine Gobin escreveu:> Dear R forum
>
> I have a data.frame
>
> df = data.frame(dates = c("4/15/2013", "4/14/2013",
"4/13/2013", "4/12/2013"), values = c(47, 38, 56, 92))
>
> I need to to create a vector by repeating the dates as
>
> "Current_date", 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013,
"Current_date", 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013,
Current_date, 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013
>
> i.e. I need to create a new vector as given below which I need to use for
some other purpose.
>
> Current_date
> 4/15/2013
> 4/14/2013
> 4/13/2013
> 4/12/2013
> Current_date
> 4/15/2013
> 4/14/2013
> 4/13/2013
> 4/12/2013
> Current_date
> 4/15/2013
> 4/14/2013
> 4/13/2013
> 4/12/2013
>
> Is it possible to construct such a
> column?
>
> Regards
>
> Katherine
>
>
>
> [[alternative HTML version deleted]]
>
>
>
> ______________________________________________
> R-help at r-project.org 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.
>
On 04/17/2013 07:11 PM, Katherine Gobin wrote:> Dear R forum > > I have a data.frame > > df = data.frame(dates = c("4/15/2013", "4/14/2013", "4/13/2013", "4/12/2013"), values = c(47, 38, 56, 92)) > > I need to to create a vector by repeating the dates as > > "Current_date", 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013, "Current_date", 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013, Current_date, 4/15/2013, 4/14/2013, 4/13/2013, 4/12/2013 > > i.e. I need to create a new vector as given below which I need to use for some other purpose. > > Current_date > 4/15/2013 > 4/14/2013 > 4/13/2013 > 4/12/2013 > Current_date > 4/15/2013 > 4/14/2013 > 4/13/2013 > 4/12/2013 > Current_date > 4/15/2013 > 4/14/2013 > 4/13/2013 > 4/12/2013 > > Is it possible to construct such a > column? >Hi Katherine, How about: rep(c("Current date",paste(4,15:12,2013,sep="/")),3) Jim