Change variable types
For displaying data in ggplot2 graphics, it is often helpful to convert all the variables to the right data type. Usually, categorical variables like country in this example should be converted to factors before plotting them. You can do so using as.factor(). In your data set, two columns are still of type "character" – use mutate() to turn them into factors.
Latihan ini adalah bagian dari kursus
Communicating with Data in the Tidyverse
Petunjuk latihan
- Turn the variable
yearinto a factor. Before turning it into a factor, turn it into a number usingas.numeric(): call theas.numeric()function within theas.factor()function call. - Turn the variable
countryinto a factor.
Latihan interaktif praktis
Cobalah latihan ini dengan menyelesaikan kode contoh berikut.
# Turn year and country into a factor
ilo_data_corrected <- ilo_data %>%
mutate(year = as.___(as.___(year)),
country = ___)
# See the results
ilo_data_corrected