Hi, I have a list named "lista", which has 50 vectors and each vector has the length about 1200. I would like to creat a matrix out of "lista". What I try now is cbind(lista[[1]],lista[[2]],...,lista[[50]]). I guess there would be an easy way of doing this. Could anyone give me some advice? -- View this message in context: http://www.nabble.com/creat-list-tf4391162.html#a12519637 Sent from the R help mailing list archive at Nabble.com.
livia wrote:> Hi, > > I have a list named "lista", which has 50 vectors and each vector has the > length about 1200. I would like to creat a matrix out of "lista". What I try > now is cbind(lista[[1]],lista[[2]],...,lista[[50]]). I guess there would be > an easy way of doing this. Could anyone give me some advice?matrix(unlist(lista), ncol=50) Uwe Ligges
Many thanks. Uwe Ligges wrote:> > > > livia wrote: >> Hi, >> >> I have a list named "lista", which has 50 vectors and each vector has the >> length about 1200. I would like to creat a matrix out of "lista". What I >> try >> now is cbind(lista[[1]],lista[[2]],...,lista[[50]]). I guess there would >> be >> an easy way of doing this. Could anyone give me some advice? > > > matrix(unlist(lista), ncol=50) > > Uwe Ligges > > ______________________________________________ > R-help at stat.math.ethz.ch 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. > >-- View this message in context: http://www.nabble.com/creat-list-tf4391162.html#a12520728 Sent from the R help mailing list archive at Nabble.com.
Try this:
do.call("cbind", lista)
On 9/6/07, livia <yn19832 at msn.com> wrote:>
> Hi,
>
> I have a list named "lista", which has 50 vectors and each vector
has the
> length about 1200. I would like to creat a matrix out of "lista".
What I try
> now is cbind(lista[[1]],lista[[2]],...,lista[[50]]). I guess there would be
> an easy way of doing this. Could anyone give me some advice?
> --
> View this message in context:
http://www.nabble.com/creat-list-tf4391162.html#a12519637
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at stat.math.ethz.ch 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.
>