Chapter 3 – Filtering and Summarizing Data
The loaded R package versions (in the order mentioned in the chapter):
- sqldf 0.4-10 (CRAN)
- hflights 0.1 (CRAN)
- dplyr 0.4.1 (CRAN)
- data.table 1.9.4. (CRAN)
- plyr 1.8.2 (CRAN)
- microbenchmark 1.4-2 (CRAN)
Further reading:
- The data.table manuals, vignettes and other documentation at https://github.com/Rdatatable/data.table/wiki/Getting-started
- Introduction to dplyr, vignette at https://cran.rstudio.com/web/packages/dplyr/vignettes/introduction.html
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