Sorry. It was my typo. Should be three times as it in the example.
Feng On Mon, Sep 13, 2010 at 11:32 AM, Jim Lemon <j...@bitwrit.com.au> wrote: > On 09/13/2010 07:19 PM, Feng Li wrote: > >> Dear R, >> >> I have a vector, say a = c(1,2,4,5,6,8). Can I generate a vector or array >> (2-by-3-by-3) of this form c(1,2,1,2,1,2,4,5,4,5,4,5,6,8,6,8,6,8), in >> which >> every two elements in "a" have been repeated twice? >> >> I am to stupid today and could not figure this simple question out... >> Many >> many thanks! >> >> Hi Feng, > I would take a quick look at the help for "rep" and "c", but I would first > suggest that you count the number of times that the elements are to be > repeated. While you have made the definition of the problem reasonably clear > with your example, there are an awful lot of combinations of "every two > elements" of a, whether you want to repeat them two or three times. > > Jim > > -- Feng Li Department of Statistics Stockholm University 106 91 Stockholm, Sweden http://feng.li/ [[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.
