Re: [R] sort a data frame according to roman characters

From: Gabor Csardi <csardi_at_rmki.kfki.hu>
Date: Tue, 12 Feb 2008 11:51:51 +0100

I assume that data$Roman is character.

data[order(as.numeric(as.roman(data$Roman))),] should do it. Maybe data[order(as.roman(data$Roman)), ] is enough too.

Gabor

On Tue, Feb 12, 2008 at 10:36:50AM +0000, Luis Ridao Cruz wrote:
> R-help,
>
> I have a data frame with one column containing roman numbers
> The data are not sorted as : I II III IV V VI VII VIII IX
> X XI XII XIII XIV XV
>
> Using data[order(data$Roman),] does not do the job.
>
> How can this be done?
>
> Thanks in advance.
>
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-- 
Csardi Gabor <csardi_at_rmki.kfki.hu>    UNIL DGM

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Received on Tue 12 Feb 2008 - 11:25:55 GMT

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