On Aug 28, 2012, at 4:05 PM, Duncan Murdoch <murdoch.dun...@gmail.com> wrote:
> Is there a function to efficiently search for a subsequence within a vector? > > For example, with > > x <- 1:100 > > I'd like to search for the sequence c(49,50,51), and be told that it occurs > exactly once, starting at location 49. (The items in the vectors might be > numeric or character, and there might be repetitions within the search > pattern or within the vector I'm searching.) > > Duncan Murdoch There is a thread here: http://tolstoy.newcastle.edu.au/R/e17/help/12/02/4201.html that has various solutions and towards the end has a post with some timings. Regards, Marc Schwartz ______________________________________________ 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.