在R中附加大量data.frame

Question

I have some unknown number of data frames that need to be glued together into a long single data frame.

set.seed(0)
N <- floor(rnorm(1,100,2))

for(i in 1:N){
  assign(paste('X', i, sep=''), data.frame(O=rnorm(1,100,2)))
}

Now I want to make a data frame with N rows and 1 column by combine the data frames X1 - XN together.

How can I do that?

EDIT:

Following Roland suggestions I switched to list:

set.seed(0)
N <- floor(rnorm(1,100,2))


XP <- list()

for(i in 1:N){
  XP[[i]] <- data.frame(O=rnorm(1,100,2))
}   

I am still not sure about the next step..

Answer 1

正如我在评论中已经说过的，您可以使用do.call ，它与@Roland的列表方法完美配合。

do.call(rbind,XP)