[R] two-way ANOVA

[Luis Rideau Cruz]

R-help

This is more a statistic thing than an R question.

I have length measurements of organisms which I want to use for an two-way ANOVA( fixed factors)
The problem is that I have different number of replicates for each combination of factors.

What are the strengths and weakness of these approach when I applly aov function in R.
The help file states  : 
     'aov' is designed for balanced designs, and the results can be
     hard to interpret without balance.....

Thank you 


Luis Ridao Cruz
Fiskirannsóknarstovan
Nóatún 1
P.O. Box 3051
FR-110 Tórshavn
Faroe Islands
Phone:             +298 353900
Phone(direct): +298 353912
Mobile:             +298 580800
Fax:                 +298 353901
E-mail:              luisr at frs.fo
Web:                www.frs.fo