Filtering and arranging
You'll often need to use the pipe operator (%>%) to combine multiple dplyr verbs in a row. In this case, you'll combine a filter() with an arrange() to find the highest population countries in a particular year.
Latihan ini adalah bagian dari kursus
Introduction to the Tidyverse
Petunjuk latihan
- Use
filter()to extract observations from just the year 1957, then usearrange()to sort in descending order of population (pop).
Latihan interaktif praktis
Cobalah latihan ini dengan menyelesaikan kode contoh berikut.
library(gapminder)
library(dplyr)
# Filter for the year 1957, then arrange in descending order of population