lme4 has a function isSingular to check if the fitted model is Singular, Although lm has the parameter singular.ok = TRUE by defualt, I could not find a function to check if the fitted model is singular.
What would be the correct way to implement such a function for and lm object? Check if df.residuals == 0 Thanks Witek -- Witold Eryk Wolski ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
