[R] how to convert all columns of a data frame into factors

[Gabor Grothendieck]

Try this:

replace(BOD, TRUE, lapply(BOD, factor))


On 10/4/06, Weiwei Shi <helprhelp at gmail.com> wrote:
> Hi,
>
> I use "apply"
> apply(x, 2, factor)
>
> but it does not work. please help. thanks.
>
> --
> Weiwei Shi, Ph.D
> Research Scientist
> GeneGO, Inc.
>
> "Did you always know?"
> "No, I did not. But I believed..."
> ---Matrix III
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