DPLYR is one of my favorite R packages. Its logical and consistent rules replace the older, motley collection of syntactically inconsistent packages and functions. It’s like a Swiss Army knife in the woods—don’t leave home without it.
Most of the book’s code examples use built-in R datasets or toy dataframe hard-coded into the program. For practice, you should substitute your own data when running the snippets of code.
1.1 Filter Commands
The filter command is used to eliminate rows (records) you do not want. The following commands use built-in ...