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In the article How to Find the Size of a Data Frame in R, we will look at how to find the size of a data frame in R.

A data frame is a fundamental data structure in R. Understanding its size is crucial for efficient data analysis.

We discuss three functions that can be used to represent the size of a data frame: nrow(), ncol()And dim().

What are nrow(), ncol()And dim()?

• nrow() used to represent the number of rows in a data frame.
• ncol() used to display the number of columns in a data frame.
• dim() is used to represent the dimensions (rows and columns) of a data frame.

Example 1: Use nrow() to display the number of rows

To use nrow() To display the number of rows in a data frame, simply type nrow(df) Where df is the name of your data frame. For example, if we have a data frame named df with the following code:

df 



We can use nrow() to display the number of rows as follows:



nrow(df)
This will produce the following result:
(1) 6
This means that our data frame has 6 rows.
Example 2: Use ncol() to display the number of columns
To use ncol() To display the number of columns in a data frame, simply type ncol(df) Where df is the name of your data frame. For example:
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ncol(df)
This will produce the following result:
(1) 4
This means that our data frame has 4 columns.
Example 3: Usage dim() to display dimensions
To use dim() To display the dimensions (rows and columns) of a data frame, simply type dim(df) Where df is the name of your data frame. For example:
dim(df)
This will produce the following result:
(1) 6 4
This means that our data frame has 6 rows and 4 columns.
Using brackets with dim()
You can also use brackets with the dim() function to display only the rows or columns. For example:
dim(df)(1)
This will produce the following result:
(1) 6
This means that our data frame has 6 rows.
In the same way,
dim(df)(2)
This will produce the following result:
(1) 4
This means that our data frame has 4 columns.
Conclusion
In this article we learned how to find the size of a data frame in R using three functions: nrow(), ncol()And dim(). 
We also explored how to use brackets with dim() to display only the rows or columns. 
Understanding how to determine the size of a data frame will help you efficiently analyze your data and make informed decisions in your R projects.
The post How to Find the Size of a Data Frame in R appeared first on Data Science Tutorials
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