[R] What is the difference between anova {stats} and aov?

[Chuck Cleland]

On 10/27/2009 1:06 PM, Peng Yu wrote:
> There are anova {stats} and aov in R. It seems that anova takes an
> object returned by a model fitting function. But I don't see any
> examples for anova. Can somebody give me a simple example on anova?
> What is the difference between anova and aov?

http://finzi.psych.upenn.edu/Rhelp08/2009-January/184619.html

fm1 <- aov(breaks ~ tension + wool, data=warpbreaks)
fm2 <- aov(breaks ~ tension * wool, data=warpbreaks)

anova(fm1)
anova(fm2)
anova(fm1, fm2)

  See ?anova.lm and ?anova.glm for more anova() examples.

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-- 
Chuck Cleland, Ph.D.
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