Basic question (if you know the answer)... I am dealing with a list of commonly-formatted sub-lists, for example:
l <- list("") l[[1]] <- c("A1","A2","A3") l[[2]] <- c("B1","B2","B3") l[[3]] <- c("C1","B2","B3") Lets say I need to extract every 2nd item (i.e. A2, B2, C2). [[]] cannot be used. l[2] returns practically the same as l[[2]]. Is there a way to achieve this without having to loop or convert to data.frame? Thanks in advance. -- View this message in context: http://r.789695.n4.nabble.com/Selecting-elements-from-all-items-in-a-list-tp4387045p4387045.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.