Unnesting a data frame
You now have a tidied version of each model stored in the tidied
column. You want to combine all of those into a large data frame, similar to how you combined the US and UK tidied models earlier. Recall that the unnest()
function from tidyr
achieves this.
Cet exercice fait partie du cours
Case Study: Exploratory Data Analysis in R
Instructions
- Add an
unnest()
step to unnest the tidied models stored in thetidied
column. Save the result ascountry_coefficients
. - Print the resulting
country_coefficients
object to the console.
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
# Add one more step that unnests the tidied column
___ <- by_year_country %>%
nest(-country) %>%
mutate(model = map(data, ~ lm(percent_yes ~ year, data = .)),
tidied = map(model, tidy))
# Print the resulting country_coefficients variable