... and John Nash's comment (regarding another issue) may also be appropriate:
"... As with many tools in this domain, for effective use they require more knowledge than many of their users possess, and can be dangerous because they seem to "work". " -- Bert On Sat, Dec 24, 2011 at 9:44 AM, David Winsemius <dwinsem...@comcast.net> wrote: > > On Dec 24, 2011, at 12:07 PM, Kristen Mancuso wrote: > >> I am using a nested model in R and the lm output shows 47 not defined >> because of singularities and I have no idea why. Any help on why this is >> happening or how to fix this problem would be very much appreciated. >> Below >> is the output I received from R. > > >> not defined because of singularities > > > This question should be a FAQ if it's not already: > > http://lmgtfy.com/?q=%22not+defined+because+of+singularities%22 > > > > -- > > David Winsemius, MD > West Hartford, CT > > ______________________________________________ > 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. -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm ______________________________________________ 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.