[R] step.gam

[Simon Wood]

> Dave Roberts discusses R/S-plus (or mgcv/gam package level) gam fitting
> in ecological context at
> http://labdsv.nr.usu.edu/splus_R/lab5/lab5.html. You may find some
> useful hints here, as Dave is partial to the traditional S-plus gam as
> well.

This looks good to me, too. One or two things have changed since it was 
written, though - in particular mgcv does have summary and anova methods, 
and mgcv::gam can handle smooth interactions using s() or te() terms 
(gam::gam can handle smooth interactions using lo() terms, which behave 
more like mgcv s() terms rather than te() terms). 

Simon

_____________________________________________________________________
> Simon Wood simon at stats.gla.ac.uk        www.stats.gla.ac.uk/~simon/
>>  Department of Statistics, University of Glasgow, Glasgow, G12 8QQ
>>>   Direct telephone: (0)141 330 4530          Fax: (0)141 330 4814