Hi all,
I'm doing a 3-way ANOVA like this:
summary(aov(formula('FP ~ (lum * obj * man)^3 - Error(vp/(lum * obj *
man)^3)'),data=dataf))
But in the output I only get 1- and 2-way effects, like this one:
Error: vp:obj:man
Df Sum Sq Mean Sq F value Pr(F)
obj:man 1 1.5291e-34 1.5291e-34 5.7011
Marius think you wanted to do a new post and not reply to mine :P
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Hi all,
I'm doing a 3-way ANOVA like this:
summary(aov(formula('FP ~ (lum * obj * man)3 - Error(vp/(lum * obj *
man)3)'),data=dataf))
But in the output I only get 1- and 2-way effects, like this one:
Error: vp:obj:man
Df Sum Sq Mean Sq F value Pr(F)
obj:man 1 1.5291e-34 1.5291e-34 5.7011
It seems your model defines more parameters then your data permits (e.g:
singular).
What you can do is try something like this:
summary(aov(formula('FP ~ (lum + obj + man)^2 - Error(vp/(lum + obj +
man)^2)),data=dataf))
(notice the use of + and ^)
This is something your data might permit
From: tal.gal...@gmail.com
Date: Tue, 23 Nov 2010 18:14:39 +0200
To: m.t.h...@ai.rug.nl
CC: r-help@r-project.org
Subject: Re: [R] Three-way ANOVA shows me two-way results
It seems your model defines more parameters then your data permits (e.g:
singular).
if you do google search
5 matches
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