Not sure what you mean by mean of each position, so here are two possibilities: rowMeans and colMeans:
> x1<-as.vector(rnorm(10)) > x2<-as.vector(rnorm(10)) > x3<-as.vector(rnorm(10)) > x4<-as.vector(rnorm(10)) > x5<-as.vector(rnorm(10)) > x6<-as.vector(rnorm(10)) > x7<-as.vector(rnorm(10)) > x8<-as.vector(rnorm(10)) > x9<-as.vector(rnorm(10)) > x10<-as.vector(rnorm(10)) > > # create matrix > x1.6 <- rbind(x1, x2, x3, x4, x5, x6) > rowMeans(x1.6) x1 x2 x3 x4 x5 x6 -0.7845288 0.3254140 -0.4430038 -0.1533713 0.6074253 -0.1560222 > colMeans(x1.6) [1] 0.23480212 -0.08486182 -0.28657007 -0.59151369 0.08995106 0.55138690 -0.22388657 [8] -0.36354109 -0.20111151 -0.13146655 > On Mon, Dec 19, 2011 at 11:00 AM, Pablo <pschatfi...@gmail.com> wrote: > Suppose I have the following: > > x1<-as.vector(rnorm(10)) > x2<-as.vector(rnorm(10)) > x3<-as.vector(rnorm(10)) > x4<-as.vector(rnorm(10)) > x5<-as.vector(rnorm(10)) > x6<-as.vector(rnorm(10)) > x7<-as.vector(rnorm(10)) > x8<-as.vector(rnorm(10)) > x9<-as.vector(rnorm(10)) > x10<-as.vector(rnorm(10)) > > I would like the mean of x1 to x6 for each vector position. I would do > something else with x7-x10. These vectors are not currently in a dataframe. > I tried to be clever by trying get(paste(paste("x", 1:6, sep=""), > collapse="+")) but it didn't work. Any thoughts are greatly appreciated, > > Pablo > > -- > View this message in context: > http://r.789695.n4.nabble.com/Summing-x1-to-x6-tp4214604p4214604.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. -- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? Tell me what you want to do, not how you want to do it. ______________________________________________ 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.