Try this: lapply(l, '[', 1, 1)
On Thu, Jan 14, 2010 at 2:22 PM, Hubert Colt <hubert.c...@gmail.com> wrote: > Hi, > > Apologies in advance for the basic nature of my question. I am still very > much a rookie when it comes to R. Having googled it, checked Nabble and > trial/error to the best of my ability, I have yet to find an easy solution. > > I am currently working with a list of 5x5 matrices, and want to extract a > list consisting of the first number of each matrix. > > In other words I want to go from: > > [[1]] > [,1] [,2] [,3] [,4] [,5] > [1,] a X X X X > [2,] X X X X X > [3,] X X X X X > [4,] X X X X X > [5,] X X X X X > > [[2]] > [,1] [,2] [,3] [,4] [,5] > [1,] b X X X X > [2,] X X X X X > [3,] X X X X X > [4,] X X X X X > [5,] X X X X X > > etc. > > to a new list: > > [,1] > [[1]] a > [[2]] b > > etc. > > Any help will be greatly appreciated. > > -Hubert > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ 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.