how to order a dataframe ?
On Wed, 07 May 2003 18:20:43 +0200, you wrote in message <3EB9325B.4010906 at ariase.com>:
Hi, I've got a problem which seemed simple to me at first view, but which I haven't managed to solve yet. I have a dataframe, or a matrix, and I would like to order it along with one of the variables/columns. I tried to use order() but it remained quite unclear to me. How should I proceed ? Thanks in advance (I guess that's not very difficult a question for most of you)
Try something like this: x <- matrix(rnorm(100),10,10) s <- x[order(x[,1]),] Now s is a copy of x sorted on the first column. Duncan Murdoch