Week 10: Factors and dates

DATA 412/612 · November 4

Lectures

• 10.1 forcats: Factors(PDF)
• 10.2 lubridate: Dates and Times(PDF)
• lubridate cheat sheet (Posit)

Labs

• Lab 10: Factors and Dates(PDF)
• Lab 10 solutions (password)

Additional readings

• R for Data Science: Factors
• R for Data Science: Dates and times
• forcats documentation
• lubridate documentation

Discussion

• A bar plot of weekdays is in alphabetical order. What went wrong, and how do you fix it with forcats?
• You subtract two dates and get a difftime. When should you convert that to a number of days?