24:03

data.table in R

53:27

Hadley Wickham's "dplyr" tutorial at useR 2014 (1/2)

19:34

Data Manipulation Tools: dplyr -- Pt 3 Intro to the Grammar of Data Manipulation with R

1:04:00

Introduction to R Data Analysis: Data Cleaning

1:01:10

Stanford Seminar - Expressing yourself in R

38:57

Hands-on dplyr tutorial for faster data manipulation in R

30:09

Regular Expressions in R

17:07

Introduction to R: Matrices