On Tue, 2007-09-18 at 01:19 +0800, zhijie zhang wrote: > Dear friends, > In S-PLUS, we can use the following argument, but not in R. > mode12 <- gam(score1 ~ lo(latitude) + lo(longitude)) > I searched the help in S-PLUS, it says lo() Allows the user to specify a > Loess fit in a GAM formula, but i didn't find the correponding function in > R. > Anybody knows how to do the similar task in R?
See function gam() in package gam, available from CRAN, which makes us of lo() (also available in the gam package). This closely follows the implementation in S-PLUS. Note that gam() in recommended package mgcv (distributed with R) provides an alternative approach to GAM modelling, which you might wish to take a look at as well. By the way, you could have solved this yourself in a matter of seconds if you'd used the R search tools. The following RSiteSearch("lo", restrict = "functions") returns the correct answer as the first hit. HTH G > Thanks very much. > -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% 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.