I have a list of data frames and I want to concatenate them into a
single data frame, basically appending all of the data frames to each
other (they are all the same shape, in terms of columns). I'm looking
for a nice way to do that. I can of course just consecutively rbind
them to a "master" dataframe, but I have 22,000 such data frames, each
with a few hundred rows, so this process takes a good while. Should be
simple, I imagine....
Here is a toy data structure.
j <- list()
for (i in letters[1:26]) {j[[i]] <-
data.frame(rep(i,25),matrix(rnorm(250),nrow=25))}
Thanks.
Sean
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