Hello List,
I have a dataset consisting of strings that I want to split while saving the
delimiter.
Some example data:
“leucocyten + gramnegatieve staven +++ grampositieve staven ++”
“leucocyten – grampositieve coccen +”
I want to split the strings such that I get the following result:
c(“leucocyten +”, “gramnegatieve staven +++”, “grampositieve staven ++”)
c(“leucocyten –“, “grampositieve coccen +”)
I have tried strsplit with a regular expression with a positive lookahead, but
I am not able to achieve the results that I want.
I have tried:
as.list(strsplit(x, split = “(?=[\\+-]{1,3}\\s)+, perl=TRUE)
Which results in:
c(“leucocyten “, “+”, “gramnegatieve staven “, “+”, “+”, “+”, “grampositieve
staven ++”)
c(“leucocyten “, “–“, “grampositieve coccen +”)
Is there a function or regular expression that will make this possible?
Kind regards,
Emily
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