I'm trying to transform my data using ART function (provided by ARTool package) and then run a two-way repeated measures ANOVA on the transformed data. I am using the following code:
m <- art(value ~ X1*X2 + Error(Subjects/(X1*X2)), data = df)
anova(m)
Would this be the correct way to put in the error terms? Also, how can I run a post-hoc multiple comparisons test on the transformed data?
art.con(m, "X1:X2") does not seem to work after running the code above.