Re: [R] connecting matrices

HI Elisa, I guess there is a mistake. Check whether this is what you wanted. indx<-sort(el1,index.return=TRUE)$ix[1:3] list(el[,indx],indx) #[[1]]  #    [,1] [,2] [,3] #[1,]   41   21   11 #[2,]   42   22   12 #[3,]   43   23   13 #[4,]   44   24   14 #[5,]   45   25   15 # #[[2]] #[1] 9 5 3 A.K.

Re: [R] connecting matrices

Dear Elisa, Try this: el<- matrix(1:100,ncol=20)  set.seed(25)  el1<- matrix(sample(1:100,20,replace=TRUE),ncol=1) In the example you showed, there were no column names.   list(el[,sort(el1)[1:3]],sort(el1,index.return=TRUE)$ix[1:3]) #[[1]]  #    [,1] [,2] [,3] #[1,]   31   61   71 #[2,]   32  

Re: [R] connecting matrices

Thanks arun,The second one look ok..thanks indeed Elisa > Date: Thu, 25 Apr 2013 07:37:25 -0700 > From: smartpink...@yahoo.com > Subject: Re: connecting matrices > To: eliza_bo...@hotmail.com > CC: r-help@r-project.org > > HI Elisa, > I guess there is a mistake. > Check whether this is what you w