Copy the capitals
Sometimes you want to create new columns from your data, and sometimes you want to use an already existing vector. But do you know how to create a new column that only references or only copies the elements of this vector? Let's find out.
You'll be working with the wages dataset, which has been filtered to make things easier. Now it only contains the data for the year 1994. You'll be adding a new column, containing the capitals for each state. Let's try the different methods!
The wages dataset and the DataFrames package have been loaded for you.
本练习是课程的一部分
Data Manipulation in Julia
交互式实操练习
通过完成这段示例代码来试试这个练习。
# Create new column by referencing
____
capitals[9] = "N/A"
println(wages[9,:])