search for: 9x3x2x2x2

Displaying 1 result from an estimated 1 matches for "9x3x2x2x2".

2002 Jul 15
0
unhappy with aov performance
As the subject says, I am unhappy with R's aov performance. I have a data set containing 25000 cases. This causes thrashing even with very moderate formulae, because the model matrix has quite a lot of lines. The study has 9x3x2x2x2 (or so) design factors. Is there a recommended method for pre-condensing the data before inputting them into aov in R? I want to be able to preserve the person factor (42) for further analysis. I could try to aggregate the response variables for all and use a count for weighting them. AFAIS, in p...