search for: gapfun

...(x=c(2,4,7,9),y=c(2,3,5,4)) z <- list(a,b) # Do "something" to get the equivalent of rbind(z[[1]],z[[2]]) ??? More complex version: My data is in this format because it's the output of a "by" statment that looks like this: y <- by(d,list(d$StudentID,d$Assignment),gapfun) (where gapfun is a function I've defined that takes a data frame and returns another data frame). What I would like is to do is transform y into a data frame that has columns "StudentID", "Assignment", and the columns in the data frame returned by gapfun. Any ideas?...