Excellent! That did the trick. Thank you very much.

On Thu, Jan 14, 2010 at 5:27 PM, Henrique Dallazuanna <wwwhsd@gmail.com>wrote:

> Try this:
>
> lapply(l, '[', 1, 1)
>
>
> On Thu, Jan 14, 2010 at 2:22 PM, Hubert Colt <hubert.colt@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<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
>

	[[alternative HTML version deleted]]

