Symbols vs. Strings
Using symbols to refer to columns can sometimes be easier than using strings. There is not much speed difference between them, so it is up to you what you want to use.
In this exercise, you'll be working with the penguins
dataset containing data about different species of penguins. Scientists are interested in the island the penguin was observed at as well as some basic measurements of its body as the flipper length or the shape of its beak, represented by the columns culmen depth and culmen length. Body weight and sex is also recorded.
Let's select some columns so you can see what you like using the penguins
dataset!
The DataFrames
package and the penguins
dataset have been loaded for you.
This exercise is part of the course
Data Manipulation in Julia
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Select the species column using symbol
____[:, ____]