Combining filter, mutate, and arrange
In this exercise, you'll combine all three of the verbs you've learned in this chapter, to find the countries with the highest life expectancy, in months, in the year 2007.
Questo esercizio fa parte del corso
Introduction to the Tidyverse
Istruzioni dell'esercizio
- In one sequence of pipes on the
gapminderdataset: filter()for observations from the year 2007,mutate()to create a columnlifeExpMonths, calculated as12 * lifeExp, andarrange()in descending order of that new column
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
library(gapminder)
library(dplyr)
# Filter, mutate, and arrange the gapminder dataset