-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 15/02/12 05:17, Redding, Matthew wrote: > Hi All, > > > I've been trawling through the documentation and listserv archives > on this topic -- but as yet have not found a solution. I'm sure > this is pretty simple with R, but I cannot work out how without > resorting to ugly nested loops.
No actual solution - but this sounds to me like a "moving window" statistic. I googled for "moving window R" and found, among others, the following: http://tolstoy.newcastle.edu.au/R/help/04/10/5161.html Maybe this can give you some additional ideas - for your question, you would not calculate the e.g. mean of the moving window, but check if the sequence in the window is equal to the one you are looking for. Cheers, Rainer > > As far as I can tell, grep, match, and %in% are not the correct > tools. > > Question: given these vectors -- patrn <- c(1,2,3,4) exmpl <- > c(3,3,4,2,3,1,2,3,4,8,8,23,1,2,3,4,4,34,4,3,2,1,1,2,3,4) > > how do I get the desired answer by finding the occurence of the > pattern and returning the starting indices: 6, 13, 23 > > Suggestions very much appreciated! > > Kind regards, > > > > > Matt Redding, Ph.D. Principal Scientist Geochemist/Soil Chemist > Queensland Primary Industries & Fisheries DEEDI PO Box 102, > Toowoomba, 4350, Qld ph: 0746 881372 fax: 0746 881192 > > > ********************************DISCLAIMER**************...{{dropped:15}} > > ______________________________________________ > 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. - -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Stellenbosch University South Africa Tel : +33 - (0)9 53 10 27 44 Cell: +33 - (0)6 85 62 59 98 Fax : +33 - (0)9 58 10 27 44 Fax (D): +49 - (0)3 21 21 25 22 44 email: rai...@krugs.de Skype: RMkrug -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk87b3wACgkQoYgNqgF2egpqxACeNIMFFIDM6oqyejLR5yewNz2W R2AAn1elVRr0zqbADRFyZupWnMirAuZy =BXd9 -----END PGP SIGNATURE----- ______________________________________________ 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.
