List columns

This "nested" data has an interesting structure. The second column, data, is a list, a type of R object that hasn't yet come up in this course that allows complicated objects to be stored within each row. This is because each item of the data column is itself a data frame.

# A tibble: 200 × 2
                           country              data
                             <chr>            <list>
1                      Afghanistan <tibble [34 × 3]>
2                        Argentina <tibble [34 × 3]>
3                        Australia <tibble [34 × 3]>
4                          Belarus <tibble [34 × 3]>
5                          Belgium <tibble [34 × 3]>
6  Bolivia, Plurinational State of <tibble [34 × 3]>
7                           Brazil <tibble [34 × 3]>
8                           Canada <tibble [34 × 3]>
9                            Chile <tibble [34 × 3]>
10                        Colombia <tibble [34 × 3]>

You can use nested$data to access this list column and double brackets to access a particular element. For example, nested$data[[1]] would give you the data frame with Afghanistan's voting history (the percent_yes per year), since Afghanistan is the first row of the table.