# Convert Data Frame Row to Vector in R (Example)

In this article, I’ll illustrate how to **extract a row from a data frame and convert it to a vector** in the R programming language.

Table of contents:

So now the part you have been waiting for – the programming part:

## Creation of Example Data

First, we have to create some example data in R:

data <- data.frame(x1 = 1:5, # Create example data x2 = 2:6, x3 = 3:7) data # Print example data # x1 x2 x3 # 1 1 2 3 # 2 2 3 4 # 3 3 4 5 # 4 4 5 6 # 5 5 6 7 |

data <- data.frame(x1 = 1:5, # Create example data x2 = 2:6, x3 = 3:7) data # Print example data # x1 x2 x3 # 1 1 2 3 # 2 2 3 4 # 3 3 4 5 # 4 4 5 6 # 5 5 6 7

Our data frame consists of five rows and three columns. Note that all columns have the same data type (i.e. numeric).

## Example: Convert Row to Numeric Vector

If we want to extract a particular row of our data frame, we can specify the row index of this row within square brackets:

data[3, ] # Extract row of data frame # x1 x2 x3 # 3 3 4 5 |

data[3, ] # Extract row of data frame # x1 x2 x3 # 3 3 4 5

As you can see based on the previous output of the RStudio console, we have just extracted a single row from our data matrix. However, this output is still a one-row data frame.

In order to convert this one-row data frame to a vector, we can use the as.numeric function as follows:

as.numeric(data[3, ]) # Convert row to vector # 3 4 5 |

as.numeric(data[3, ]) # Convert row to vector # 3 4 5

The final output is a numeric vector consisting of the values of row three.

## Video & Further Resources

I have recently published a video on my YouTube channel, which illustrates the topics of this page. You can find the video below.

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In addition, I can recommend to read the other articles of https://statisticsglobe.com/. You can find a selection of tutorials below:

- Convert Data Frame Column to Vector
- Convert List of Vectors to Data Frame
- The R Programming Language

In summary: You learned in this article how to **convert a row of a data frame to a vector (or array)** in R. In case you have additional questions, let me know in the comments.

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