Once you learn to use dput() I am sure someone will be happy to help you. http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
John Kane Kingston ON Canada > -----Original Message----- > From: elaine.kuo...@gmail.com > Sent: Sat, 21 Sep 2013 07:14:38 +0800 > To: r-help@r-project.org > Subject: [R] search species with all absence in a presence-absence matrix > > Dear list > > > > I have a matrix composed of islandID as rows and speciesID as columns. > > IslandID: Island A, B, C?.O (15 islands in total) > > SpeciesID: D0001, D0002, D0003?.D0100 (100 species in total) > > > > The cell of the matrix describes presence (1) or absence (0) of the > species > in an island. > > > > Now I would like to search the species with absence (0) > > in all the islands (Island A to Island O.) > > > > Please kindly advise the R code for the search purpose. > > Thank you. > > > > Elaine > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ____________________________________________________________ FREE 3D EARTH SCREENSAVER - Watch the Earth right on your desktop! ______________________________________________ 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.
