Tidying, Joins, Scripts

Overview

• Importing data
• Tidying data
  • pivot_longer
  • pivot_wider
  • separate
  • unite
• Writing data
• Other delimiters

Before class

• Ch 6, Ch 8, Ch 19

Additional resources

• Lohr. 2014. For Big-Data Scientists, “Janitor Work” Is Key Hurdle to Insights. New York Times
• Data Carpentry a response to the NYTimes article
• Pivoting in tidyr

What you need to do after class

• Begin work on assignment 3
• Review today’s lecture materials (slides), and prepare for next class