Mutating columns

Change and create data in columns

We’ll continue our data wrangling by cleaning up the columns of our data. We’ll use the {dplyr} mutate() functions to change and create column data.

Learning objectives

• Change existing column values
• Create new columns
• Move new columns when creating them
• Apply functions across columns

Pre-meeting

To prepare for this class meeting, please do the following:

• Read R4DS2 4.3.1

Class meeting

• Changing columns
• Conditional changes
• Multiple changes
• Creating columns
• Moving columns when creating
• Removing old columns
• Applying functions to multiple columns
• Changing multiple columns
• Slides and Code

Homework after the class meeting

Wrap up this lesson

• Complete the exercises

For next class meeting

• Read R4DS2 5