Joining Data with data.table in R
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This course will show you how to combine and merge datasets with data.table.
Course Description
In the real world, data sets typically come split across many tables while most data analysis functions in R are designed to work with single tables of data. In this course, you’ll learn how to effectively combine data sets into single tables using data.table. You’ll learn how to add columns from one table to another table,
What You’ll Learn
Joining Multiple data.tables
This chapter will show you how to perform simple joins that will enable you to combine information spread across multiple tables.
Diagnosing and Fixing Common Join Problems
This chapter will discuss common problems and errors encountered when performing data.table joins and show you how to troubleshoot and avoid them.
Joins Using data.table Syntax
In this chapter you will perform joins using the data.table syntax, set and view data.table keys, and perform anti-joins.
Concatenating and Reshaping data.tables
In the last chapter of this course you’ll learn how to concatenate observations from multiple tables together, how to identify observations present in one table but not another, and how to reshape tables between long and wide formats.
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