How can I remove an expression that is stored in a variable from a string in base R?
Problem Description:
For example, I have variable x = "a1" while I also have another variable y = "5a1".
How could I make y = "5" while still using the x variable?
I tried using gsub() with but it only seems to work if it is inside double quotes. Is there a variable equivalent for ?
Solution – 1
You can do:
x <- "a1"
y <- "5a1"
gsub(pattern = paste0(x, "$"), replacement = "", x = y)
$ is used to match end of string