Hi, Since most of us are unlikely to have a copy of the book available perhaps you could supply the following informaion' What packages are you using besides the basic R installation What is the code What is the data > The best way to supply sample data is to use the dput() function to output a formatted data set that you can copy and paste into your email.
John Kane Kingston ON Canada > -----Original Message----- > From: kari0...@uni.flinders.edu.au > Sent: Tue, 18 Sep 2012 01:18:12 +0000 > To: r-help@r-project.org > Subject: [R] extracting values > > Hi all, > > I 'm doing the exercise given in the 'SDM with R' (Robert J. Hijmans and > Jane Elith), chapter 4.2, regarding extracting values . I tried to do the > same using my own data as well. Each cases i received the following error > message ; > > "Error in .xyValues(x, as.matrix(y), ...) : xy should have 2 columns > only. > > Found these dimensions: > > Can some body explain me how to get rid of that? Thanks in advance. > > champika > > [[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 MARINE AQUARIUM SCREENSAVER - Watch dolphins, sharks & orcas 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.
