How to Apply head() & tail() in R (3 Examples)
In this R programming tutorial you’ll learn how to apply the head and tail functions.
Construction 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 1: Print First Six Rows of Data Frame Using head() Function
head(iris) # Applying head() function # 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 |
head(iris) # Applying head() function # 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 2: Print Last Six Rows of Data Frame Using head() Function
tail(iris) # Applying tail() function # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 145 6.7 3.3 5.7 2.5 virginica # 146 6.7 3.0 5.2 2.3 virginica # 147 6.3 2.5 5.0 1.9 virginica # 148 6.5 3.0 5.2 2.0 virginica # 149 6.2 3.4 5.4 2.3 virginica # 150 5.9 3.0 5.1 1.8 virginica |
tail(iris) # Applying tail() function # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 145 6.7 3.3 5.7 2.5 virginica # 146 6.7 3.0 5.2 2.3 virginica # 147 6.3 2.5 5.0 1.9 virginica # 148 6.5 3.0 5.2 2.0 virginica # 149 6.2 3.4 5.4 2.3 virginica # 150 5.9 3.0 5.1 1.8 virginica
Example 3: Print First N Rows of Data Frame Using head() Function
head(iris, 2) # Applying head() function # 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 |
head(iris, 2) # Applying head() function # 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