> -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Immanuel > Sent: Thursday, November 04, 2010 3:42 PM > To: r-help@r-project.org > Subject: [R] count occurrence and distance of characters in string > > Hello all, > > I want to know how often one character occurs in a given string > and the distance from between every two occurences. (distance = other > characters between them). > > thanks >
Without a reproducible example, I can only guess. But this should get you started. s <- 'abcdeabcxdeabcdeaxabcdeabcdeabcdxeabc' chr.pos <- which(unlist(strsplit(s,NULL)) == 'x') chr.count <- length(chr.pos) chr.dist <- diff(chr.pos)-1 chr.pos chr.count chr.dist Hope this is helpful, Dan Daniel J. Nordlund Washington State Department of Social and Health Services Planning, Performance, and Accountability Research and Data Analysis Division Olympia, WA 98504-5204 ______________________________________________ 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.
