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Get the First parts of a Data Set in R Programming – head() Function
  • Last Updated : 30 Jun, 2020

head() function in R Language is used to get the first parts of a vector, matrix, table, data frame or function.

Syntax: head(x, n)

Parameters:
x: specified data types
n: number of row need to be printed

Example 1:




# R program to illustrate
# head function
  
# Calling the head() function to 
# get the iris demo dataset
head(iris)

Output:

  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:




# R program to illustrate
# head function
  
# Calling the head() function to 
# get the iris demo dataset in
# 4 rows
head(iris, 4)

Output:

  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
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