I am trying to do a robust two way ANOVA due to a lack of normality, and t2way runs perfectly but mcp2atm gives an error. The data is a NO3 measurement of 12 plots, 8 samplings and in 4 different cropping systems (Rotation). I have a RCBD experimental design with 3 replicates.
I do not know how to proceed, or if my data can be analysed with a robust ANOVA. Any info will be very appreciated. Thanks!
t2way(NO3 ~ Rotation * Date, data = VBSL1)
mcp2atm(NO3 ~ Rotation * Date, data = VBSL1)
Error in nfac[unique(mf[, 2]), unique(mf[, 3])] : subscript out of bounds