Split text based on dot in R

Question

I have:

"word1.word2"

and I want:

"word1" "word2"

I know I have to use strsplit with perl=TRUE, but I can't find the regular expression for a period (to feed to the split argument).

Do you really need a regex for this? – anubhava Mar 18 '15 at 15:11 — anubhava, Mar 18 '15 at 15:11
`strsplit(str1, '[.]')[[1]]` should do it or use `\\.` – akrun Mar 18 '15 at 15:12 — akrun, Mar 18 '15 at 15:12

score 17 · Answer 1 · answered Mar 19 '15 at 10:20

There are several ways to do this, both with base R and with the common string processing packages (like "stringr" and "stringi").

Here are a few in base R:

str1 <- "word1.word2"

strsplit(str1, ".", fixed = TRUE)  ## Add fixed = TRUE
strsplit(str1, "[.]")              ## Make use of character classes
strsplit(str1, "\\.")              ## Escape special characters

score 3 · Answer 2 · answered Mar 18 '15 at 15:14

3

Try this

library(stringr)
a <- "word1.word2"
str_split(a, "\\.")

answered Mar 18 '15 at 15:14

dimitris_ps

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Split text based on dot in R

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