gamlss.nl (version 4.1-0)

gamlss-nl-package: The GAMLSS add on package for fiting parametric non linear models

Description

The main purpose of this package is to allow non-linear fitting within a GAMLSS model. The main function nlgamlss() can fit any parametric (up to four distribution parameters) GAMLSS family of distributions.

Details

Package:

gamlss-nl

Type:

Package

Version:

1.5.0

Date:

2005-12-12

License:

GPL (version 2 or later)

References

Rigby, R. A. and Stasinopoulos D. M. (2005). Generalized additive models for location, scale and shape, (with discussion), Appl. Statist., 54, part 3, pp 507-554.

Stasinopoulos D. M., Rigby R.A. and Akantziliotou C. (2003) Instructions on how to use the GAMLSS package in R. Accompanying documentation in the current GAMLSS help files, (see also http://www.gamlss.com/).

See Also

gamlss

Examples

data(la)
# fitting the Johnson's Su distribtion to the data
modJSU   <- nlgamlss(y=PET60, mu.fo= ~bflow*(1-p1*exp(-p2/bflow)), sigma.formula=~1, 
                       nu.fo=~1, mu.start = c(.6, 110), sigma.start= 3, nu.start=1, 
                       tau.start=0.6, family=JSU, data=la) 
plot(modJSU)
summary(modJSU)
vcov(modJSU)