search for: leucocyten

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 strspli...

On Wed, 12 Apr 2023 08:29:50 +0000 Emily Bakker <emilybakker at outlook.com> wrote: > 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 coc...

...;, dat), what="", sep="\n") > On Apr 12, 2023, at 2:29 AM, Emily Bakker <emilybakker at outlook.com> wrote: > > 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 +...

Dear Emily, Using a look-behind solves the split problem in this case. (Note: Using Regex is in most/many cases the simplest solution.) str = c("leucocyten + gramnegatieve staven +++ grampositieve staven ++", "leucocyten ? grampositieve coccen +") tokens = strsplit(str, "(?<=[-+])\\s++", perl=TRUE) PROBLEM The current expression does NOT work for a different reason: the "-" is coded using a NON-ASCII character....