Xiongqing Zhang <xqzhang85 <at> yahoo.com> writes: > > > Dear Mr. or Ms., > > I used the R-software to run the zero-inflatoin negative binomial model, but I could not get the results. > And the error message is "solve.default(as.matrix(fit$gaussian)) ". In the model, I introduced 3 dummy > variables. I do not know the reasons fully. >
We can't possibly help if you don't tell us specifically what you did. Please read the posting guide! Tell us what packages you are using, show us your data (or make up a small data set that shows the same problem), and show us what commands you tried. "Reproducible example" is the key. Ben Bolker ______________________________________________ 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.
