On 23-Jul-08 12:54:49, Shubha Vishwanath Karanth wrote: > Hi R, > If > x=c(1,3,5) > y=c(2,4,6) > > I need a vector which is c(1,2,3,4,5,6) from x and y. > How do I do it? I mean the best way.... > Thanks, Shubha
Your query is ambiguous, in that it is not clear whether you want a) The elements of the combination of x and y to be in increasing order, regardless of how they are distributed between x and y In which case a simple solution is sort(c(x,y)) b) The elements to be taken alternately from x and y, regardless of their values In which case a simple solution is as.vector(rbind(x,y)) Example: x <- c(1.1,1.2,1.3) y <- c(2.1,2.2,2.3) ## (a): sort(c(x,y)) # [1] 1.1 1.2 1.3 2.1 2.2 2.3 ## (b) as.vector(rbind(x,y)) # [1] 1.1 2.1 1.2 2.2 1.3 2.3 The key to solution (b) is that R reads a matrix down the columns, and rbind(x,y) puts x as a row above y as a row, so reading down the columns alternates between x and y. Hoping this helps, Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <[EMAIL PROTECTED]> Fax-to-email: +44 (0)870 094 0861 Date: 23-Jul-08 Time: 14:30:31 ------------------------------ XFMail ------------------------------ ______________________________________________ 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.
