R help - Jun 2013 - how to fit a glm model with all possible interactions between explanatory variables

Hi,

I am trying to find a way to fit a glm model with all the possible
interaction terms between different variables, without typing all the
X1:X2, X1:X3,  in the formula, is there a way in R to do that?

Thanks,

-Jack

	[[alternative HTML version deleted]]

On Jun 6, 2013, at 12:52 PM, Jack Luo wrote:
> Hi,
> 
> I am trying to find a way to fit a glm model with all the possible
> interaction terms between different variables, without typing all the
> X1:X2, X1:X3,  in the formula, is there a way in R to do that?
The "*" operator does that:

  ~ X1 * X2 * X3

-- 
David Winsemius
Alameda, CA, USA

?formula

-- Bert

On Thu, Jun 6, 2013 at 12:52 PM, Jack Luo <jluo.rhelp at gmail.com>
wrote:
> Hi,
>
> I am trying to find a way to fit a glm model with all the possible
> interaction terms between different variables, without typing all the
> X1:X2, X1:X3,  in the formula, is there a way in R to do that?
>
> Thanks,
>
> -Jack
>
>         [[alternative HTML version deleted]]
>
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-- 

Bert Gunter
Genentech Nonclinical Biostatistics

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