R Introduction: Part II
Author: Oleksandr Lomako
In the second part of R Introduction, you will learn about multi-dimensional built-in structures, such as matrices, data frames, and lists.
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In the first section, you will learn the two-dimensional structure that is widely used in math. In R, this data type is used not only for math purposes but also has many real-life purposes.
What is a Matrix?
Operation with Matrices
In the second section, you will learn data frames - an 'upgraded' version of the matrix. Unlike matrix, the data frame may contain data of different types. Most real-life tables can be represented as data frames. You will learn how to create/manipulate data frames and extract necessary data.
What is a Data Frame?
In the final section, you will learn the lists in R. This data type works as vectors but may contain data of different types.
What is a List?
Extracting List Elements