How to create a List of Lists in R - Step by Step Examples

How to create a List of Lists in R ?

In R, you can create a list of lists using the `list()` function and specifying lists as elements of the outer list.

In this example,

We create two inner lists named list1 and list2.
We create an outer list named list_of_lists using the list() function and initialize it with the inner lists.
Finally, we print the list of lists to standard output.

list1 <- c(1, 2, 3)
list2 <- c('a', 'b', 'c')
list_of_lists <- list(list1, list2)
print(list_of_lists)

[[1, 2, 3], ['a', 'b', 'c']]

In this example,

We create an empty outer list named list_of_lists_empty.
We create two empty inner lists named list3 and list4.
We use the list() function to add the inner lists list3 and list4 to the outer list list_of_lists_empty.
Finally, we print the list of lists with empty inner lists to standard output.

list_of_lists_empty <- list()
list3 <- list()
list4 <- list()
list_of_lists_empty <- list(list3, list4)
print(list_of_lists_empty)

[[], []]

In this tutorial, we learned How to create a List of Lists in R language with well detailed examples.