What is the head() function in R? (2024)

FAQs

What is the head() function in R? ›

The head() function in R is used to display the first n rows present in the input data frame. In this section, we are going to get the first n rows using head() function. For this process, we are going to import a dataset 'iris' which is available in R studio by default.

Returns the first or last parts of a vector, matrix, table, data frame or function.

Definition and Usage

The head() method returns a specified number of rows, string from the top. The head() method returns the first 5 rows if a number is not specified. Note: The column names will also be returned, in addition to the specified rows.

What is the head() and tail() functions do in R? The head() in R is used to get the first rows of the DataFrame, Vector, or compatible object. The tail() is used to get the last rows of the DataFrame, Vector, or a compatible object.

Use head() to view the first few rows. Use tail() to view the first few rows. Use str() to look at the structure of the data.

Head of Function means a person who exercises major managerial responsibilities, is responsible for a significant business or operating unit, or has senior managerial responsibility for maintaining accounts or other records of the licensee.

The head command allows you to see the initial lines of a file in standard output without opening a file.

Function. The head contains sensory organs: two eyes, two ears, a nose and tongue inside of the mouth. It also houses the brain. Together, these organs function as a processing center for the body by relaying sensory information to the brain.

A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste. Some very simple animals may not have a head, but many bilaterally symmetric forms do, regardless of size.

The head anatomy contains structures that control and protect our ability to see, hear, speak, and think. The head encompasses bony and soft tissue structures at the apex of the spine. A body cannot function without the brain located inside the head. The bony skull protects the brain and its neurovascular structures.

What is tail() in R? ›

tail: Return the First or Last Part of an Object

Returns the first or last parts of a vector, matrix, table, data frame or function. Since head() and tail() are generic functions, they may also have been extended to other classes.

Alternative Method: Using head() Function in R

In addition to top_n(), R provides the head() function for selecting the first 'n' rows of a DataFrame. Here, we demonstrate how to use head() to achieve the same result. The output of the above code will also display the top 10 rows of the dataframe df.

From the definition of a list, any element, when prepended to a list, is also a list. For example, 1:[2,3] is also a list. Here, 1 is called the head of the list, and 2 is called the tail of the list.

The head() function in R is used to display the first n rows present in the input data frame. In this section, we are going to get the first n rows using head() function. For this process, we are going to import a dataset 'iris' which is available in R studio by default.

The head() function is primarily used to view the first few rows of a dataset. It helps users quickly get an overview of the data and its structure. Analysts can check column names, data types, and the data itself by displaying the initial records.

str() function in R Language is used for compactly displaying the internal structure of a R object. It can display even the internal structure of large lists which are nested. It provides one liner output for the basic R objects letting the user know about the object and its constituents.

Function. The head contains sensory organs: two eyes, two ears, a nose and tongue inside of the mouth. It also houses the brain. Together, these organs function as a processing center for the body by relaying sensory information to the brain.

You can create RStudio headers using the Ctrl + Shift + R command. A text box will automatically pop up for you to name. This ensures that the length of all headers are equal and it saves you time from typing out the dashes. You may choose to use other heading styles (that won't be tracked by RStudio).

A head of machine learning is a senior-level position that oversees the design, development, and deployment of machine learning solutions for various business problems.