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I am trying to create a list of lists in R but the interior list are only being stored as temp variables as I go through a loop and when I try to access one of the sub-lists inside of the larger list, I only receive the first element of the sub-list.

I found this answer R. how make list of lists in R? but it is not working for me and I think it might be due to the fact that I am not storing each list.

Here is my code: 

list1 <- list(1,2,3,4,5) allLists <- list() for(i in 1:5){ allLists[i] = list1 } newlst = allLists[[3]] newlst[2] #[[1]] #NULL

I wold like to be able to access all the lists within allLists but it does not let me. The value for newlst is 1 when I would like it to be the list (1,2,3,4,5)

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    Do you want allLists[[i]] <- list1 in the for-loop? Commented May 28, 2019 at 14:30
  • @jogo yes I think that is what I needed. I am new to R as of last Friday so I am not exactly sure what the double brackets really mean but your suggestion worked and I will look into what the double brackets do. Thank you. Commented May 28, 2019 at 14:36
  • stackoverflow.com/questions/1169456/… Commented May 29, 2019 at 7:55

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If we want to create a list of lists an option is replicate

replicate(5, list1, simplify = FALSE)
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My actual application of this will be using different lists and adding them to one big list so I can store them. I only used llist1 replicated 5x as a way to simplify my code for the question. But yes that would work if I needed list1 several times in a big list.

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