On Wed, 16 Jun 2004, Murray Logan wrote: > I am trying to perform a model 3 ANOVA for a 2 factor (say factor A and > factor B) anova in which factor A is fixed and factor B is random. > Therefore, the error term for the test of factor A should be the A:B > interaction term and the error terms for B and A:B should be the model > residual (within) term. I have tried to work out how to specify such > error strata using aov, however, I have had little success. Is there a > way to specify just the interaction (A:B) as an error term using Error() > within aov or provide a list of error strata. > Ideally as Error=list(A="A:B",B="Within", A:B="Within")
Error is documented in ?aov, which has a reference. Have you read it? It does contain the answer to your question. I will not try to explain it here, and your attempt at specification suggests you do not understand the meaning of `strata' here. The strata are function of the way the experiment was designed, not the AOV tables you want which should be a consequence of the design. > In addition, I have tried using lme to perform this function, but again > without much success. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
