Hi David, Try
> x[[2]][1] [1] 4 > A.K. ----- Original Message ----- From: David Perlman <dperl...@wisc.edu> To: r-help@r-project.org Cc: Sent: Monday, May 21, 2012 8:07 PM Subject: [R] List indexing question Consider the following: > x<-list(c(1,2,3),c(4,5,6)) > x[1] [[1]] [1] 1 2 3 > x[2] [[1]] [1] 4 5 6 So far that all seems reasonable. But now there's a problem. I'm used to python, where I would say x[2][1] and get the value 4. But I can't figure out how to do that in R. > x[2][1] [[1]] [1] 4 5 6 > x[2,1] Error in x[2, 1] : incorrect number of dimensions I have no idea why x[2][1] returns the same thing as x[2]; that makes no sense to me at all. What is the proper syntax for what I'm trying to do? Thanks! -dave---------------------------------------------------------------------- A neuroscientist is at the video arcade, when someone makes him a $1000 bet on Pac-Man. He smiles, gets out his screwdriver and takes apart the Pac-Man game. Everyone says "What are you doing?" The neuroscientist says "Well, since we all know that Pac-Man is based on electric signals traveling through these circuits, obviously I can understand it better than the other guy by going straight to the source!" ______________________________________________ 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. ______________________________________________ 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.
