Hi,
df
ht area
1 320 3
2 410 4
3 230 2
4 360 3
5 126 1
6 280 2
7 260 2
8 280 2
9 280 2
10 260 2
df$area <- as.factor(df$area)
levels(df$area) <- c("I", "II", "III", "IV")
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
On 10/08/07, Jabez Wilson <[EMAIL PROTECTED]> wrote:
>
> Dear R Help,
> I have a set of data of heights of trees described by area that they are
> in. The areas are numerical (0 to 7).
>
> ht area
> 1 320 3
> 2 410 4
> 3 230 2
> 4 360 3
> 5 126 1
> 6 280 2
> 7 260 2
> 8 280 2
> 9 280 2
> 10 260 2
> .......
> 180 450 4
> 181 90 1
> 182 120 1
> 183 440 4
> 184 210 2
> 185 330 3
> 186 210 2
> 187 100 1
> 188 0 0
>
> I want to convert the area column values to factors, to do an anova.
> However, if I use:
>
> df$areaf <- factor(df$area,
> labels=c("0","I","II","III","IV","V","VI","VII"))
>
> it gives the following message:
>
> Error in factor(df$area, labels = c("0", "I", "II", "III", "IV", "V",
> "VI", :
> invalid labels; length 8 should be 1 or 7
>
> Can anyone help?
>
> Jabez
>
>
> ___________________________________________________________
>
> now.
>
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>
> ______________________________________________
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>
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