[R] the rationale for using update()

[Thomas Lumley]

On Wed, 18 May 2005, Dimitri Joe wrote:

> Hi there,
>
> I wonder what is the rationale for using update(): just saving on 
> typing, more efficiency, or something else?
>

It saves on typing (and in particular on typing errors).  Methods for 
"update" could be more efficient than fitting the model from scratch, but 
typically are not.

 	-thomas