On Wed, Sep 16, 2009 at 1:35 PM, Henrique Dallazuanna <www...@gmail.com>wrote:
> Try this: > > sapply(theList, '[[', 'A') > Thanks Henrique - that is much more elegant. Rainer > > On Wed, Sep 16, 2009 at 8:34 AM, Rainer M Krug <r.m.k...@gmail.com> wrote: > > Hi > > > > I have a list which cosists out of dataframes of the same structure. Now > I > > want to extract one column (let's say column "A") from all dataframes and > > have them in a matrix (or dataframe). > > > > At the moment I am doiong: > > > > d <- data.frame(A=runif(100), B=rnorm(100)) > > theList <- list(e1=d, e2=d, e3=d, e4=d) > > f <- sapply(theList, function(l){l$A} ) > > > > But I am sure ther is a more elegant way? > > > > Rainer > > > > -- > > Rainer M. Krug, Centre of Excellence for Invasion Biology, Stellenbosch > > University, South Africa > > > > [[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 > -- Rainer M. Krug, Centre of Excellence for Invasion Biology, Stellenbosch University, South Africa [[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.