Access Particular Element of Data Frame in R (2 Examples)
In this post you’ll learn how to return particular data frame elements in the R programming language.
Construction of Example Data
data(iris) # Using iris as 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) # Using iris as 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 1: Selecting Specific Data Frame Element Using Row Index & Column Index
iris[4, 3] # Returning single element # [1] 1.5 |
iris[4, 3] # Returning single element # [1] 1.5
Example 2: Selecting Specific Data Frame Element Using Row Index & Column Name
iris[4, "Petal.Length"] # Returning single element # [1] 1.5 |
iris[4, "Petal.Length"] # Returning single element # [1] 1.5
Further Resources & Related Articles
Please find some further R programming tutorials on topics such as indices, groups, extracting data, and character strings below.