To get the substring before a specific character in R, you can use the `substr` function along with the `grep` function to find the position of the character.
In this example,
url
with a value of "https://example.com/page"
.grep
function with the pattern '/' to find the position of '/'.substr
function with the starting index of 1 and the position of '/' to get the substring before the specified character.url <- 'https://example.com/page'
index <- grep('/', url)
substring <- substr(url, 1, index - 1)
print(paste('Substring before '/':', substring))
Substring before '/': https:
In this example,
str
with a value of "Hello,World"
.grep
function with the pattern ',' to find the position of ','.substr
function with the starting index of 1 and the position of ',' to get the substring before the specified character.str <- 'Hello,World'
index <- grep(',', str)
substring <- substr(str, 1, index - 1)
print(paste('Substring before ',':', substring))
Substring before ',': Hello
In this tutorial, we learned How to get Substring before Specific Character in R language with well detailed examples.