On Fri, 2009-05-29 at 16:51 -0700, Jonathan Greenberg wrote: > R-ers: > > I was wondering if anyone had suggestions on how to implement a GAM > in a quantile fashion? I'm trying to derive a model of a "hull" of > points which are likely to require higher-order polynomial fitting (e.g. > splines)-- would quantreg be sufficient, if the response and predictors > are all continuous? Thanks!
If you're just after the AM bit of GAM, then yes, I think quantreg contains functions to do as you wish. See ?rqss and ?qss for models that allow smoothing splines in quantile regression. Alternatively, I think package VGAM may also contain something of use. HTH G > > --j > > ______________________________________________ > 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. -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% ______________________________________________ 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.
