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.