[R] Plotting 3 way Anova

Richard M. Heiberger rmh at temple.edu
Sun Aug 24 20:27:57 CEST 2008


The interaction2wt function in the HH package does much of what you are
looking for.
You will probably need to download HH from CRAN.

interaction2wt {HH} R Documentation 

Plot all main effects and twoway interactions in a multifactor design
The main diagonal displays boxplots for the main effects of each factor. The
show the interaction plots for each pair of factors. The i,j panel shows the
same factors
as the j,i but with the trace- and x-factor roles interchanged. 

The second page of 
shows the simple effects of each factor in the presence of the other.

In your example, "condition on the Y axis and year along the
X axis and four bars for each year to show mean ci for each sex and age
I think
   interaction2wt(Y ~ year + interaction(sex, age), simple=TRUE,
will show what you are looking for.

Please send executable code to the entire list if there are followup


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