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.
This exercise is part of the course
Communicating with Data in the Tidyverse
Exercise instructions
- 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.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Turn year and country into a factor
ilo_data_corrected <- ilo_data %>%
mutate(year = as.___(as.___(year)),
country = ___)
# See the results
ilo_data_corrected