How to Apply the ordered() Function in R (Example Code)
In this R tutorial you’ll learn how to apply the ordered() function.
Creation of Example Data
data(iris) # Example data head(iris) # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 4 4.6 3.1 1.5 0.2 setosa # 5 5.0 3.6 1.4 0.2 setosa # 6 5.4 3.9 1.7 0.4 setosa |
data(iris) # Example data head(iris) # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 4 4.6 3.1 1.5 0.2 setosa # 5 5.0 3.6 1.4 0.2 setosa # 6 5.4 3.9 1.7 0.4 setosa
Example: Turn Data Frame Column into Ordered Factor Using ordered() Function
class(iris$Species) # Check class of variable # [1] "factor" |
class(iris$Species) # Check class of variable # [1] "factor"
iris$Species <- ordered(iris$Species) # Using ordered function |
iris$Species <- ordered(iris$Species) # Using ordered function
class(iris$Species) # Check class of updated variable # [1] "ordered" "factor" |
class(iris$Species) # Check class of updated variable # [1] "ordered" "factor"
Further Resources & Related Tutorials
You may have a look at the following list of R programming tutorials. They discuss topics such as numeric values, character strings, data conversion, and factors: