Hi, On Wed, Feb 3, 2010 at 1:19 PM, Peng Yu <pengyu...@gmail.com> wrote: > Suppose that I have the following list of lists of frames 'root' > (let's call it a 'tree' of frames). I want to flatten it to be a list > of frames. However, if I unlist(root), it will flatten the frames as > well. Is there a simply way to flatten the tree to certain depth? > > aframe1=data.frame(x=1:3,y=1:3) > aframe2=data.frame(u=7:9,v=11:13) > aframe3=data.frame(p=3:5,q=6:8) > > main1=list(sub1=aframe1, sub2=aframe2) > main2=list(sub3=aframe3) > > root=list(main1=main1, main2=main2) > > str(root) > unlist(root)
Does `unlist(root, recursive=FALSE)` get you what you want? R> unlist(root, recursive=FALSE) $main1.sub1 x y 1 1 1 2 2 2 3 3 3 $main1.sub2 u v 1 7 11 2 8 12 3 9 13 $main2.sub3 p q 1 3 6 2 4 7 3 5 8 -steve -- Steve Lianoglou Graduate Student: Computational Systems Biology | Memorial Sloan-Kettering Cancer Center | Weill Medical College of Cornell University Contact Info: http://cbio.mskcc.org/~lianos/contact ______________________________________________ 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.