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# How to Convert List to Vector in R (With Examples)

You can use one of the following methods to convert a list to a vector in R:

#use unlist() function
new_vector names = FALSE)

#use flatten_*() function from purrr library
new_vector

The following examples show how to use each of these methods in practice with the following list:

#create list
my_list #display list
my_list

\$A
[1] 1 2 3

\$B
[1] 4 5

\$C
[1] 6

### Example 1: Convert List to Vector Using unlist() Function

The following code shows how to convert a list to a vector using the unlist() function:

#convert list to vector
new_vector #display vector
new_vector

A1 A2 A3 B1 B2  C
1  2  3  4  5  6

Note that you can specify use.names = FALSE to remove the names from the vector:

#convert list to vector
new_vector names = FALSE)

#display vector
new_vector

[1] 1 2 3 4 5 6

### Example 2: Convert List to Vector Using flatten_* Function

The following code shows how to convert a list to a vector using the family of flatten_* functions from the purrr package:

library(purrr)

#convert list to vector
new_vector #display vector
new_vector

[1] 1 2 3 4 5 6

The flatten_dbl() function specifically converts the list to a vector of type double.

Note that we could use flatten_chr() to convert a character list to a vector of type character:

library(purrr)

#define character list
my_char_list
#convert character list to character vector
new_char_vector #display vector
new_char_vector

[1] "a" "b" "c" "d" "e" "f"

Check out this page for a complete list of the family of flatten_* functions.

Note: If youâ€™re working with an extremely large list, the flatten_* functions will perform quicker than the unlist() function from base R.