[R] Fisher's LSD multiple comparisons in a two-way ANOVA

[Rmh]

yes.  See ?glht in the multcomp package, and the examples using glht in ?MMC in the HH package.

Sent from my iPhone

On Apr 3, 2012, at 6:16, Jinsong Zhao <jszhao at yeah.net> wrote:

> Hi there,
> 
> Is there a function that can do a Fisher's LSD multiple comparisons in a two-way ANOVA? I hope to get a result similar with TukeyHSD(). Especially, I hope to know the significance of comparisons between the interactions of two factors.
> 
> In the following example:
> 
> x <- c(76, 84, 78, 80, 82, 70, 62, 72, 71, 69, 72, 74, 66, 74, 68, 66, 69, 72, 72, 78, 74, 71, 73, 67, 86, 67, 72, 85, 87, 74, 83, 86, 66, 68, 70, 76, 78, 76, 69, 74, 72, 72, 76, 69, 69, 82, 79, 81)
> a <- rep(c("A1","A2"), each = 24)
> b <- rep(c("B1","B2","B3"), each =8, times = 2)
> a <- factor(a)
> b <- factor(b)
> x.aov <- aov(x~a*b)
> 
> I hope to obtained the results similar with"
> 
> http://www.gigawiz.com/images12/twowayrmposthoc.jpg
> 
> Any suggestions or comments will be really appreciated.
> 
> Regards,
> Jinsong
> 
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