Hi Christopher, what is the rule to omit "ah" which is also repeated in Text? The following might be a start:
Text <- "ahsgdvasgAbcabcsdahj" #finds first repetion of substrings of length 2 or more, here "ah" gsub("(?i)([a-z]{2,})(.*)\\1","\\1\\2",Text,perl=T) #finds all repetions of substrings of length 3 or more, here "Abc" gsub("(?i)([a-z]{3,})(.*)\\1","\\1\\2",Text,perl=T) #finds only subsequent repetions of substrings of length 2 or more gsub("(?i)([a-z]{2,})\\1","\\1",Text,perl=T) hth. Am 06.02.2013 17:46, schrieb Christofer Bogaso: > Hello again, > > I was looking for some way on How to delete repeated appearance in a > String. Let say I have following string: > > Text <- "ahsgdvasgAbcabcsdahj" > > Here you see "Abc" appears twice. But I want to keep only 1 > occurrence. Therefore I need that: > > Text_result <- "ahsgdvasgAbcsdahj" (i.e. the first one). > > Can somebody help me if it is possible using some R function? > > Thanks and regards, > > ______________________________________________ > 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. > -- Eik Vettorazzi Department of Medical Biometry and Epidemiology University Medical Center Hamburg-Eppendorf Martinistr. 52 20246 Hamburg T ++49/40/7410-58243 F ++49/40/7410-57790 ______________________________________________ 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.