Get or Set names of Elements of an Object in R Programming – names() Function

names() function in R Language is used to get or set the name of an Object. This function takes object i.e. vector, matrix or data frame as argument along with the value that is to be assigned as name to the object. The length of the value vector passed must be exactly equal to the length of the object to be named.

Syntax: names(x) <- value

Parameters:
x: Object i.e. vector, matrix, data frame, etc.
value: Names to be assigned to x

Example 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

# R program to assign name to an object
  
# Creating a vector
x <- c(1, 2, 3, 4, 5)
  
# Assigning names using names() function
names(x) <- c("gfg1", "gfg2", "gfg3", "gfg4", "gfg5")
  
# Printing name vector that is assigned 
names(x)
  
# Printing updated vector
print(x)

chevron_right


Output:

[1] "gfg1" "gfg2" "gfg3" "gfg4" "gfg5"
gfg1 gfg2 gfg3 gfg4 gfg5 
   1    2    3    4    5 

Example 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

# R program to get names of an Object
  
# Importing Library 
library(datasets) 
    
# Importing dataset 
head(airquality) 
  
# Calling names() function to get names
names(airquality)

chevron_right


Output:

  Ozone Solar.R Wind Temp Month Day
1    41     190  7.4   67     5   1
2    36     118  8.0   72     5   2
3    12     149 12.6   74     5   3
4    18     313 11.5   62     5   4
5    NA      NA 14.3   56     5   5
6    28      NA 14.9   66     5   6
[1] "Ozone"   "Solar.R" "Wind"    "Temp"    "Month"   "Day"    
My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.