Names Function in R Basics-Quick Guide
Names Function in R, In this post, we’ll look at how to use the names () function to give vectors and lists names.
Syntax
Basic R Syntax of names function is names (x)
Example 1: Assign Names to Vector
Let’s create a vector and assign the name.
vector <- 1:10 # Sample vector values from 1 to 10. vector # Print the values stored in vector # 1 2 3 4 5 6 7 8 9 10
There are ten elements in the output that have no names. We can now give each element a name while using names and letter functions.
names(vector) <- letters[1:10] # Assign names to vector
vector # Print the values stored in modified vector
a b c d e f g h i j
1 2 3 4 5 6 7 8 9 10
The previous R syntax assigned the alphabetic letters a, b, c, d, e, f, g, h, i, and j as names to our vector elements.
How to check the names of vector?
Let’s run the code names(vector)
names(vector) # Return names of vector [1] "a" "b" "c" "d" "e" "f" "g" "h" "i" "j"
How to clean the datasets in R? » janitor Data Cleansing »
Example 2: Assign Names to List
In the same approach, we may make a list of names. To begin, make a list and store some values.
list <- list(1:10,3,"abc") list ## print the stored values in the list
[[1]] [1] 1 2 3 4 5 6 7 8 9 10 [[2]] [1] 3 [[3]] [1] "abc"
Now you can see the above list contained 3 elements without any names.
Let’s assign some names to that.
names(list) <- LETTERS[1:3] # Assign names to list list # Print the modified list
$A [1] 1 2 3 4 5 6 7 8 9 10 $B [1] 3 $C [1] "abc"
Yes, now three elements named A, B and C. Let’s check the same using the names function.
names(list) # "A" "B" "C"
