Generating all possible models from full model

Tal Galili <tal.galili <at> gmail.com> writes:

On Wed, May 19, 2010 at 7:38 AM, Tim Clark <mudiver1200 <at> yahoo.com> wrote:

Is there a function that will allow me to run all model iterations if I
specify a full model? 

m1234567<-glm.convert(glm.nb(mantas~site*year+cosmonth+sinmonth+
  coslunar+sinlunar+plankton,
  data=mydata))

and have R run all the other models.

PS  I think it's slightly fewer than 2^8 (=256) models [I believe
MuMIn will respect marginality constraints, so models with the site:year
model will necessarily have site and year in them (I just tried an
example, with MuMIn::dredge, and it comes out to 160).  A lot better
than 7! = 5040