Hi.

Here are some examples that can maybe help you:

a <- "Current date"
b <- Sys.Date()-1:5
a
b

class(a)
class(b)

c(a,b)
mode(b)
as.numeric(b)
class(c(a,b))

c(a, as.character(b))
class(c(a,b))
class(c(a,as.character(b)))

Hope this helps.


On Wed, Apr 17, 2013 at 11:21 AM, Katherine Gobin <katherine_gobin@yahoo.com
> wrote:

> Dear Andrija Djurovic,
>
> Thanks for the suggestion. Ia m aware of "rep". However, here I need to
> repeat not only dates, but a string "Current_date". Thus, I need to create
> a vector ( to be included in some other data.frame) with the name say "dt"
> which will contain
>
> dt
> 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
>
> So this is combination of dates and a string. Hence, I am just wondering
> if it is possible to create such a vector or not?
>
> Regards
>
> Katherine
>
>
> --- On *Wed, 17/4/13, andrija djurovic <djandrija@gmail.com>* wrote:
>
>
> From: andrija djurovic <djandrija@gmail.com>
> Subject: Re: [R] Creating a vector with repeating dates
> To: "Katherine Gobin" <katherine_gobin@yahoo.com>
> Cc: "r-help@r-project.org" <r-help@r-project.org>
> Date: Wednesday, 17 April, 2013, 10:14 AM
>
> ?rep
>
>
> On Wed, Apr 17, 2013 at 11:11 AM, Katherine Gobin <
> katherine_gobin@yahoo.com <http://mc/compose?to=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 <http://mc/compose?to=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]]

