Re: [R] continuous independent variable in lme

2003-07-27 Thread Federico Calboli
At 14:14 27/07/2003 +0100, you wrote: >Your anova call is a sequential anova, which you are misinterpreting. >You can't conclude terms are significant or not if later terms are. >You need to use type="marginal" to interpret things the way you do (except >that I hope that does not drop the main eff

Re: [R] continuous independent variable in lme

2003-07-27 Thread Prof Brian Ripley
Your anova call is a sequential anova, which you are misinterpreting. You can't conclude terms are significant or not if later terms are. You need to use type="marginal" to interpret things the way you do (except that I hope that does not drop the main effect and keep the interaction). You also s

[R] continuous independent variable in lme

2003-07-27 Thread Federico Calboli
Dear All, I am writing to ask a clarification on what R, and in particular lme, is doing. I have an experiment where fly wing area was measured in 4 selection lines, measured at 18 and 25 degrees. I am using a lme model because I have three replicated per line (coded 1:12 so I need not use getGro