Extracting Substrings from a Character Vector in R Programming – substring() Function
substring() function in R Programming Language is used to extract substrings in a character vector. You can easily extract the required substring or character from the given string.
Syntax: substring(text, first, last)
Parameters:
- text: character vector
- first: integer, the first element to be replaced
- last: integer, the last element to be replaced
R – substring() Function Example
Example 1: Extracting values with substring function in R Programming language
R
substring ( "Geeks" , 2, 3)
substring ( "Geeks" , 1, 4)
substring ( "GFG" , 1, 1)
substring ( "gfg" , 3, 3)
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Output :
[1] "ee"
[1] "Geek"
[1] "G"
[1] "g"
Example 2: Extracting values with substring in string function in R Programming language
R
x < - c ( "GFG" , "gfg" , "Geeks" )
substring (x, 2, 3)
substring (x, 1, 3)
substring (x, 2, 2)
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Output:
[1] "FG" "fg" "ee"
[1] "GFG" "gfg" "Gee"
[1] "F" "f" "e"
Example 3: String replacement in R using substring() function
R
x <- c ( "GFG" , "gfg" , "Geeks" )
substring (x, 2, 3) <- c ( "@" )
print (x)
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Output:
[1] "G@G" "g@g" "G@eks"
Last Updated :
27 Oct, 2021
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