Hi everyone: I would like to know if there is a way of applying this kind of transformation in R (i mean aligned ranks). I read that this was a good way of analyzing interactions in data with outliers and a not normal distribution. The rank transformation is useful analyzing principal effects, but not interactions... that is when aligned rank transformation enters. I am a newby in statistics and a newby in R, so I will really appreciate your good advice and guide. Have a nice day. Claudio