[R] Error in Summary.factor(c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 4L, : max not meaningful for factors

[David Winsemius]

On Nov 10, 2011, at 6:12 AM, Alex DJ wrote:

> Thanks Duncan.
>
> This is a package, SIAR.
>
>> fo <- ordered(f)
>> fo
> [1] a b c d e
> Levels: a < b < c < d < e
>> max(fo)
> [1] e
> Levels: a < b < c < d < e
>
> The data set has 101 values, what can I use instead of letters?

Why not as.numeric(fo)?

>
> --
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>
-- 

David Winsemius, MD
West Hartford, CT