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Introduction to Data Analysis and Visualization with R

Factors in R

Explore how factors in R represent categorical data and learn to create, label, and order factor levels. Understand how to control categories for cleaner data and enable hierarchy-based comparisons, enhancing your data analysis skills.

We'll cover the following...

The factor data type

Factors are beneficial when we store data as categorical variables and construct a hierarchical structure among values. The classical use case for factor data is when values in a dataset are duplicated many times, and there are a limited number of unique values.

Here is an example:

c('Small', 'Big',' Medium', 'Small', 'Big', 'Small', 'Big', 'Medium', 'Big') 
# or 
c(2,3,2,1,1,3,1,1,3,2,3,2)

Create factors

The factor() function converts containers into factor objects. This function determines unique values ...