Dear R users, Please help me on using "mix" function under package "mixdist".
My data distribution shows there are two components for the mixture distribution: left part is an exponential and right part is a normal. So I plan to use "gamma" mixture distribution to estimate the parameters. Here is what I am using for the "mix" function. Test<-mix(x, mixparam(mu=c(1,125),sigma=c(1,11.18)),"gamma") However, one error message shows up as: "Error in nlm(function(x) f(x, ...), p, hessian, typsize, fscale, msg, : missing value in parameter" Does anybody know what that means and how to fix it to get the estimation? Your help will be much appreciated. Yun ============================================== Yun Wang Research Assistant Department of Family Medicine and Public Health Sciences Wayne State University School of Medicine 177 Shiffman Library 4325 Brush Detroit, MI 48201 Phone: 313-577-0707 Fax: 313-577-1773 ============================================== [[alternative HTML version deleted]] ______________________________________________ R-help@stat.math.ethz.ch 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.