Hands-on dplyr tutorial for faster data manipulation in R скачать в хорошем качестве

Hands-on dplyr tutorial for faster data manipulation in R

dplyr is a new R package for data manipulation. Using a series of examples on a dataset you can download, this tutorial covers the five basic dplyr "verbs" as well as a dozen other dplyr functions. Watch the follow-up tutorial:    • Going deeper with dplyr: New features in 0...   View the R Markdown document: http://rpubs.com/justmarkham/dplyr-tu... Download the source document: https://github.com/justmarkham/dplyr-... Read about why I love dplyr: https://www.dataschool.io/dplyr-tutor... Tutorial contents: 1. Introduction to dplyr (starts at 0:00) 2. Loading dplyr and the example dataset (starts at 2:29) 3. Understanding "local data frames" (starts at 3:23) 4. Verb #1: `filter` (starts at 5:17) 5. Verb #2: `select`, plus `contains`, `starts_with`, `ends_with`, `matches` (starts at 7:54) 6. Using chaining syntax for more readable code (starts at 9:34) 7. Verb #3: `arrange` (starts at 12:53) 8. Verb #4: `mutate` (starts at 13:55) 9. Verb #5: `summarise`, plus `group_by`, `summarise_each`, `n`, `n_distinct`, `tally` (starts at 15:31) 10. Window functions: `min_rank`, `top_n`, `lag` (starts at 26:47) 11. Convenience functions: `sample_n`, `sample_frac`, `glimpse` (starts at 32:44) 12. Connecting to databases (starts at 34:21) == RESOURCES == Reference manual and vignettes: http://cran.r-project.org/web/package... July 2014 webinar: http://pages.rstudio.net/Webinar-Seri... July 2014 webinar code: https://github.com/rstudio/webinars/t... Tutorial by Hadley Wickham: https://www.dropbox.com/sh/i8qnluwmui... GitHub repo: https://github.com/hadley/dplyr List of releases: https://github.com/hadley/dplyr/releases == LET'S CONNECT! == Newsletter: https://www.dataschool.io/subscribe/ Twitter:   / justmarkham   Facebook:   / datascienceschool   LinkedIn:   / justmarkham