[R] Interaction

Jeff Newmiller jdnewmil at dcn.davis.CA.us
Tue Oct 30 03:09:15 CET 2012

I thought addition was commutative. I am puzzled by your question.
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Sent from my phone. Please excuse my brevity.

Silvano Cesar da Costa <silvano at uel.br> wrote:

>I'm fitting a model with 3 variables: A, B and SNP.
>The response variable is Y.
>I would like fit the following model, in this order:
>Y ~ A + B + A*B + SNP
>In general, the R sets of the form:
>Y ~ A + B + SNP + A*B
>How do this?
>Silvano Cesar da Costa
>Universidade Estadual de Londrina
>Centro de Ciências Exatas
>Departamento de Estatística
>Fone: (43) 3371-4346
>R-help at r-project.org mailing list
>PLEASE do read the posting guide
>and provide commented, minimal, self-contained, reproducible code.

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