I have a dataset with alphanumeric strings. I am trying to replace the numeric part of the string with "nnnn" and the alphabet part with "aaaa". The length of the alphabet and numeric part does not matter.
| Example: | What I am expecting |
|---|---|
| #100001032218888example1 | #nnnnaaaannnn |
| #1-example-2 | #nnnn-aaaa-nnnn |
I tried this:
mutate(str_alpha = str_replace_all(col_name, "\\w+", "aaaa"),
str_num_alpha = str_replace_all(str_alpha, "\\d+", "nnnn"))
I think I got the "\\w+" incorrect because it replaces the numeric part of the string too.
Can someone please help? Thank you.
>Solution :
Do the reverse i.e. replace first the alphabets and then the digits so
library(stringr)
str_replace_all(str_replace_all(str1, "[[:alpha:]]+", "aaaa"), "\\d+", "nnnn")
-output
[1] "#nnnnaaaannnn" "#nnnn-aaaa-nnnn"
Or using a named vector in a single str_replace_all
str_replace_all(str1, setNames(c("aaaa", "nnnn"), c("[[:alpha:]]+", "\\d+")))
[1] "#nnnnaaaannnn" "#nnnn-aaaa-nnnn"
data
str1 <- c("#100001032218888example1", "#1-example-2")