Replicate Column with & Add to Data Frame with New Name in R (Example Code)
In this tutorial, I’ll show how to duplicate a variable in a data frame in the R programming language.
Example Data
data(iris) # Example data head(iris) # Display head of example data # 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) # Display head of example data # 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: Add Duplicate of Column to Data Frame
iris$Species_2 <- iris$Species # Replicate variable head(iris) # Display head of updated data # Sepal.Length Sepal.Width Petal.Length Petal.Width Species Species_2 # 1 5.1 3.5 1.4 0.2 setosa setosa # 2 4.9 3.0 1.4 0.2 setosa setosa # 3 4.7 3.2 1.3 0.2 setosa setosa # 4 4.6 3.1 1.5 0.2 setosa setosa # 5 5.0 3.6 1.4 0.2 setosa setosa # 6 5.4 3.9 1.7 0.4 setosa setosa |
iris$Species_2 <- iris$Species # Replicate variable head(iris) # Display head of updated data # Sepal.Length Sepal.Width Petal.Length Petal.Width Species Species_2 # 1 5.1 3.5 1.4 0.2 setosa setosa # 2 4.9 3.0 1.4 0.2 setosa setosa # 3 4.7 3.2 1.3 0.2 setosa setosa # 4 4.6 3.1 1.5 0.2 setosa setosa # 5 5.0 3.6 1.4 0.2 setosa setosa # 6 5.4 3.9 1.7 0.4 setosa setosa
Related Articles & Further Resources
In the following, you can find some additional resources on topics such as indices and variables.