Re: [R] create variables with indexes

In virtually every case where people think they need gobs of similarly-named variables, what they really need are vectors or data frames. I strongly recommend reading the Introduction to R document again to learn how to create them and access individual elements and subsets of elements.Data

[R] create variables with indexes

Hi, there: Suppose I want create variables with indexes in their names, e.g., X_1_1, X_1_2, X_1_3, ..., X_1_10, X_2_1, X_2_2, X_2_3, .. X_2_10,..., X_10_1, X_10_2, ... X_10_10. It looks like I need to use 2 indexes I and J so I is looped from 1 to 10, and J is looped from 1 to 10. But I don't

Re: [R] create variables with indexes

Maybe I misunderstand your problem. For my understanding, it's quite simple.I hope it can help. id - vector() for(i in 1:10){ for(j in 1:10){ id-append(id,paste(X,i,j,sep=_)) } } Wenbo Mu On Tue, Jul 13, 2010 at 5:44 PM, He, Yulei h...@hcp.med.harvard.edu

Re: [R] create variables with indexes

Suppose I want create variables with indexes in their names, e.g., X_1_1, X_1_2, X_1_3, ..., X_1_10, X_2_1, X_2_2, X_2_3, .. X_2_10,..., X_10_1, X_10_2, ... X_10_10. It looks like I need to use 2 indexes I and J so I is looped from 1 to 10, and J is looped from 1 to 10. But I don't know how to

Re: [R] create variables with indexes

Here is another way of going about it (presuming we are correct about what you are after): i=1:10 j=1:10 unlist(lapply(i, function(x) paste(X, x, j, sep=_))) Tyler -- View this message in context: http://r.789695.n4.nabble.com/create-variables-with-indexes-tp2288119p2288171.html Sent from

Re: [R] create variables with indexes

- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- project.org] On Behalf Of He, Yulei Sent: Tuesday, July 13, 2010 4:44 PM To: 'r-h...@lists.r-project.org' Subject: [R] create variables with indexes Hi, there: Suppose I want create variables with indexes in their names, e.g