Re: [R] one factor multiple level anova

From: Guohui Ding <gohidg_at_gmail.com>
Date: Sat 18 Jun 2005 - 11:58:30 EST

Test that:
mydata <- as.numeric(mydata)
anova(lm(mydata ~ mygroup))

2005/6/18, Lei Jiang <lj22@u.washington.edu>:
>
> I am having trouble figuring out this one.
>
> I want to do a one way anvoa with 13 levels. mydata is in a vector with
> length 65. each level has 5 repeats. but it contains NA.
>
> I made mygroup<-gl(13, 5, 65, labels=(...))
>
> anova(lm(mydata ~ mygroup))
>
> it gives following error:
> Error in model.frame(formula, rownames, variables, varnames, extras,
> extranames, :
> invalid variable type
>
> Can you please help?? Millions of thanks.
>
> Lei Jiang
>
> Department of Chemsitry
> University of Washington
> Box 351700
> Seattle, WA 98195
> Phone: 206-616-6882
> Fax: 206-685-8665
>
> ______________________________________________
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Received on Sat Jun 18 12:02:54 2005

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