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
# 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
# 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
# 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
# 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>
Finding the length of string in R programming – nchar() method
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.