[R] Anova

Rui Barradas ruipbarradas at sapo.pt
Fri Oct 5 12:23:43 CEST 2012


Hello,

You're thinking of ?aov. anova() does _not_ have a formula interface, it 
would be

anova(lm(HSuccess ~ Veg, data = data.to.analyze))

or

aov(HSuccess ~ Veg, data = data.to.analyze)

Hope this helps,

Rui Barradas
Em 05-10-2012 09:27, Jhope escreveu:
> Hi R-listers,
>
> I am trying to do an ANOVA for the following scatterplot and received the
> following error:
>
> library(car)
> scatterplot(HSuccess ~ Veg,
>              data = data.to.analyze,
>              xlab = "Vegetation border (m)",
>              ylab = "Hatching success (%)")
>
> anova(HSuccess ~ Veg, data=data.to.analyze)
>
> Error in UseMethod("anova") :
>    no applicable method for 'anova' applied to an object of class "formula"
>
> I am wondering if there is a better way to do this?
> Please advise, Jean
>
>
>
>
> --
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>
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