Re: [R] contingency table

From: John Kane <jrkrideau_at_yahoo.ca>
Date: Fri, 15 Feb 2008 10:34:30 -0500 (EST)


Have a look at
length(iris$Species)
length(prev)
--- Carla Rebelo <crebelo_at_liaad.up.pt> wrote:

> Hello!
>
> May you help me? I'm trying to do a contingency
> table using this
>
> > data(iris)
> > library(rpart)
> > modelo <- rpart(Species ~., iris)
> > prev <- predict(modelo, iris)
>
> Finally the contingency table
> > table(iris$Species, prev)
> But an error occurs:
> Error in table(iris$Species, prev) :
> all arguments must have the same length
>
> And I do not understand why, may you help me?
>
> Thank You!
>
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> reproducible code.
>



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Fri 15 Feb 2008 - 16:13:12 GMT

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