Hi Jessica, thank you for your prompt response. Yes I had deduced it had to do with the Hessian.
However, I am not clear what "all columns having range the order of one" actually means and what this means for my data. Does this mean removing decimals (ie by shifting the decimal place)? I would have thought that the data matrix was already "sensibly scaled". Any further insight greatly appreciated. Regards -- View this message in context: http://r.789695.n4.nabble.com/Package-MASS-polr-Error-in-svd-X-infinite-or-missing-values-in-x-tp4635829p4635928.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
