[R] Please help me

From: Xiongqing Zhang <xqzhang85_at_yahoo.com>
Date: Tue, 08 Jun 2010 00:42:38 -0700 (PDT)

Dear Mr. or Ms.,

I used the R-software to run the zero-inflatoin negative binomial model (zeroinfl()) .

Firstly, I introduced one dummy variable to the model as an independent variable, and I got the estimators of parameters. But the results are not satisfied to me. So I introduced three dummy variables to the model. but I could not get the results. And the error message is "solve.default(as.matrix(fit$gaussian)) ". I do not know the reasons fully. And I want to know what method was used to estimate the parameters when I called the function zeroinfl() .

I will be very appreciate if you can help me. Thank you.

Best regards,

Xiongqing Zhang

	[[alternative HTML version deleted]]


R-help_at_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. Received on Tue 08 Jun 2010 - 08:48:08 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Tue 08 Jun 2010 - 11:40:28 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive