Attempting to remove ★ symbol from a column to no avail.
dput(star$fifa21_raw_data.W.F[1:20])
c("4 ★", "4 ★", "3 ★", "5 ★", "5 ★", "4 ★", "4 ★", "3 ★", "3 ★", "4 ★", "3 ★", "4 ★", "3 ★", "3 ★", "4 ★", "4 ★", "3 ★", "4 ★", "3 ★", "4 ★")
I looked everywhere and feel as though gsub will do the trick here so I tried:
gsub('[★]([0-9]+)','\\1\\2', star$fifa21_raw_data.W.F)
and R printed the same result:
[1] "4 ★" "4 ★" "3 ★" "5 ★" "5 ★" "4 ★" "4 ★" "3 ★" "3 ★" "4 ★" [11] "3 ★" "4 ★" "3 ★" "3 ★" "4 ★" "4 ★" "3 ★" "4 ★" "3 ★" "4 ★"
I am at a loss. Thank you for assisting me in this.
Besides that your pattern [★]([0-9]+) does not match the example data, note that there is just a single capture group for the digits so there is no \\2.
If you want to match the format in your example data, you can start by capturing a single digit and match the spaces after it:
([0-9])\\s+★
Which will match:
([0-9]) Capture a single digit in group 1\\s+ Match 1 or more whitespace characters (or just spaces if you want)★ Match literallyUse group 1 in the replacement.
items <- c("4 ★", "4 ★", "3 ★", "5 ★", "5 ★", "4 ★", "4 ★", "3 ★", "3 ★", "4 ★", "3 ★", "4 ★", "3 ★", "3 ★", "4 ★", "4 ★", "3 ★", "4 ★", "3 ★", "4 ★")
result <- gsub("([0-9])\\s+★", "\\1", items)
print(result)
Output
[1] "4" "4" "3" "5" "5" "4" "4" "3" "3" "4" "3" "4" "3" "3" "4" "4" "3" "4" "3" "4"