Create new variables with functions of existing variables ( mutate()).Pick variables by their names ( select()).Pick observations by their values ( filter()).In this chapter you are going to learn the five key dplyr functions that allow you to solve the vast majority of your data manipulation challenges: Lgl stands for logical, vectors that contain only TRUE or FALSE.įctr stands for factors, which R uses to represent categorical variables There are three other common types of variables that aren’t used in this dataset but you’ll encounter later in the book: These describe the type of each variable:Ĭhr stands for character vectors, or strings.ĭttm stands for date-times (a date + a time). You might also have noticed the row of three (or four) letter abbreviations under the column names. For now, you don’t need to worry about the differences we’ll come back to tibbles in more detail in wrangle. Tibbles are data frames, but slightly tweaked to work better in the tidyverse. It prints differently because it’s a tibble.

(To see the whole dataset, you can run View(flights) which will open the dataset in the RStudio viewer). You might notice that this data frame prints a little differently from other data frames you might have used in the past: it only shows the first few rows and all the columns that fit on one screen.

Studio one 5.5