[R] Pattern Matching Replacement
I would like to replace \r\n with in a character string, where \r\n exists only between and , how could I do that? Initial: characterString = XMLtag1 id=\F\r\n2\/t\r\nag1\r\ntag\r\n2/tag2/XML Result: characterString = XMLtag1 id=\F2\/tag1\r\ntag2/tag2/XML Tried with sub(below) but it only replaces the first instance and I am not sure how to pattern match so that it only replaces \r\n that exist within tags( and ). sub(\r\n, , charStream) -- View this message in context: http://www.nabble.com/Pattern-Matching-Replacement-tp18014978p18014978.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Pattern Matching Replacement
On 19.06.2008, at 20:17, ppatel3026 wrote: I would like to replace \r\n with in a character string, where \r\n exists only between and , how could I do that? Initial: characterString = XMLtag1 id=\F\r\n2\/t\r\nag1\r\ntag\r\n2/tag2/XML Result: characterString = XMLtag1 id=\F2\/tag1\r\ntag2/tag2/ XML Tried with sub(below) but it only replaces the first instance and I am not sure how to pattern match so that it only replaces \r\n that exist within tags( and ). sub(\r\n, , charStream) It's only a very first idea: gsub((?=)([^]*?)\\r\\n([^]*?)(?=), \\1\\2, characterString, perl=T) --Hans __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
