How to get Substring before Specific Character in R - Step by Step Examples

How to get Substring before Specific Character in R ?

Answer

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.

✐ Examples

1 Substring Before '/' in "https://example.com/page"

In this example,

We create a variable named url with a value of "https://example.com/page".
We use the grep function with the pattern '/' to find the position of '/'.
We use the substr function with the starting index of 1 and the position of '/' to get the substring before the specified character.
Finally, we display the substring.

R Program

url <- 'https://example.com/page'
index <- grep('/', url)
substring <- substr(url, 1, index - 1)
print(paste('Substring before '/':', substring))

Output

Substring before '/': https:

2 Substring Before ',' in "Hello,World"

In this example,

We create a variable named str with a value of "Hello,World".
We use the grep function with the pattern ',' to find the position of ','.
We use the substr function with the starting index of 1 and the position of ',' to get the substring before the specified character.
Finally, we display the substring.

R Program

str <- 'Hello,World'
index <- grep(',', str)
substring <- substr(str, 1, index - 1)
print(paste('Substring before ',':', substring))

Output

Substring before ',': Hello

Summary

In this tutorial, we learned How to get Substring before Specific Character in R language with well detailed examples.

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How to get Substring before Specific Character in R - Step by Step Examples

How to get Substring before Specific Character in R ?

Answer

✐ Examples

1 Substring Before '/' in "https://example.com/page"

R Program

Output

2 Substring Before ',' in "Hello,World"

R Program

Output

Summary

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