Get or Set Levels of a Factor in R Programming - levels() Function

Last Updated : 15 Jul, 2025
levels() function in R Language is used to get or set the levels of a factor.
Syntax: levels(x) Parameters: x: Factor Object
Example 1: Python3 1== 
# R program to get levels of a factor

# Creating a factor
gender <- factor(c("female", "male", "male", "female")); 
gender

# Calling levels() function
# to get the levels
levels(gender)
Output: 
[1] female male   male   female
Levels: female male
[1] "female" "male"
Example 2: Python3 1== 
# R program to set levels of a factor

# Creating a factor
gender <- factor(c("female", "male", "male", "female")); 
gender

# Calling levels() function
# to set the levels
levels(gender) <- c("abc", "def")
gender
Output: 
[1] female male   male   female
Levels: female male
[1] abc def def abc
Levels: abc def
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Article Tags:
R Language
R Factor-Function

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