nchar() method in R Programming Language is used to get the length of a character in a string object.
Syntax: nchar(string)
Where: String is object.
Return: Returns the length of a string.Â
R - length of string using nchar() Example
Example 1: Find the length of the string in R
In this example, we are going to see how to get the length of a string object using nchar() method.
# R program to calculate length of string
# Given String
gfg < - "Geeks For Geeks"
# Using nchar() method
answer < - nchar(gfg)
print(answer)
Output:
[1] 15
Example 2: Use nchar for R Vector
In this example, we will get the length of the vector using nchar() method.
# R program to get length of Character Vectors
# by default numeric values
# are converted into characters
v1 <- c('geeks', '2', 'hello', 57)
# Displaying type of vector
typeof(v1)
nchar(v1)
Output:
'character' 5 1 5 2
Example 3: Passing NA values to the nchar() function
The nchar() function provides an optional argument called keepNA, it can help when dealing with NA values.
# R program to create Character Vectors
# by default numeric values
# are converted into characters
v1 <- c(NULL, '2', 'hello', NA)
nchar(v1, keepNA = FALSE)
Output:
1 5 2
In the above example, the first element is NULL then it returns nothing and the last element NA returns 2 because we keep keepNA = FALSE. If we pass keepNA = TRUE, then see the following output:
# R program to create Character Vectors
# by default numeric values
# are converted into characters
v1 <- c('', NULL, 'hello', NA)
nchar(v1, keepNA = TRUE)
Output:
0 5 <NA>
