If you write an update.X method where X is the class of your graph
objects then it will work on
your graph objects and yet still work on lm, glm, etc.

On Nov 20, 2007 7:01 AM, Søren Højsgaard <[EMAIL PROTECTED]> wrote:
> Dear all,
>
> I wonder if it is "bad style" (or something worse) to create an "update" 
> function which does not work on model objects of the lm, glm etc. type. 
> Specifically, I have some graph objects (graphs as mathematical objects, not 
> as displays) which I want to alter and for that purpose I thought of writing 
> an update function. Would doing so violate a "deeper philosophy" in the R 
> system or have other unfortunate consequences. If so, I'm happy to hear other 
> suggestions...
>
> Regards
> Søren

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