[R] lme and ordering of terms

From: Christoph Scherber <Christoph.Scherber_at_uni-jena.de>
Date: Tue 30 Aug 2005 - 01:14:28 EST


Dear R users,

When fitting a lme() object (from the nlme library), is it possible to test interactions *before* main effects? As I understand, R conventionally re-orders all terms such that highest-order interactions come last - but Iīd like to know if itīs possible (and sensible) to change this ordering of terms.

Iīve tried the terms() command (from aov) but I donīt know if something similar exists for lme() objects.

Thanks a lot for your help!

Best wishes
Christoph



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