On Mon, 2007-11-26 at 09:25 -0800, Bricklemyer, Ross S wrote: > All, > > I have been using a data set to build pls models for three different > soil properties. Two of the three models run fine; however I receive > the following error for the final model. > > > libs.IC.cal <- mvr(libs.IC.fmla, data = libsdata.cond.cal, > ncomp=20,validation = "LOO", method = "oscorespls") > > Error in colMeans(x, n, prod(dn), na.rm) : > 'x' must be numeric > > There are many "0" for this soil property. Could this cause the > error?
Without having the data (or a small example therefore) it is impossible to tell. To start, try str(libsdata.cond.cal) and check that the variables referenced in your formula object (which is what I presume libs.IC.fmla is?) are all numeric and haven't got coded as factors or characters or something strange. G > > Best, > Ross > > ******************************************************************* > Ross Bricklemyer > Dept. of Crop and Soil Sciences > Washington State University > 291D Johnson Hall > PO Box 646420 > Pullman, WA 99164-6420 > Work: 509.335.3661 > Cell/Home: 406.570.8576 > Fax: 509.335.8674 > Email: [EMAIL PROTECTED] > > > > ______________________________________________ > 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. -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% ______________________________________________ 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.