As practice with regular expressions, pattern matching, and web scraping, we develop a small program in several steps to plot the pairs
(rushing yardage, receiving yardage)
across the 32 NFL teams.

Please download nfl1.R, listen to the screencast nfl1.mp4, and run nfl1.R yourself. Study and modify nfl1.R and ask questions about it until you understand it. Then repeat this process for versions 2, 3, and 4.

nfl1.R, nfl1.mp4 (alternate link: nfl1.mp4) (7:44)
nfl2.R, nfl2.mp4 (alternate link: nfl2.mp4) (8:16)
nfl3.R, nfl3and4.mp4 (alternate link: nfl3and4.mp4) (7:22)
nfl4.R

Later you will do homework involving web scraping.