See ?class

-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

On 13/08/07, Jabez Wilson <jabezwuk@yahoo.co.uk> wrote:
>
> Dear all, please help with what must be a straightforward question which I
> can't answer.
>
>   I add a column of my dataframe as factor of an existing column e.g.
>
>   df[,5] <- factor(df[,2])
>
>   and can test that it is by is.factor()
>
>   but if I did not know in advance what "types" the columns were, is there
> a function to tell me what they are.
>
>   i.e. instead of is.factor(), is.matrix(), is.list(), a function more
> like what.is()
>
>
>
>
>
> ---------------------------------
>
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>
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