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_go...@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 <djandr...@gmail.com>* wrote: > > > From: andrija djurovic <djandr...@gmail.com> > Subject: Re: [R] Creating a vector with repeating dates > To: "Katherine Gobin" <katherine_go...@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_go...@yahoo.com <http://mc/compose?to=katherine_go...@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]] ______________________________________________ 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.
