This chapter covers an additional
R data type called a list. Lists are somewhat similar to vectors, but can store more types of data and usually include more details about that data (with some cost). Lists are
R’s version of a map, which is a common and extremely useful way of organizing data in a computer program. Moreover, lists are used to create data frames, which are the primary data storage type used for working with sets of real data in
R. This chapter covers how to create and access elements in a list, as well as how to apply functions to lists.
8.1 What Is a List?
A list is a lot like a vector, in that it is a one-dimensional collection of data. However, unlike a vector, you can store elements of different types in a list; for ...