Dear Barja Have you looked at "gamlss" y "gamlss.dist" libaries?
There some functions called WEI, WEI2, and WEI3 Cheers, Fer ______________________________________________ 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.
