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

From: Jim Lemon <jim_at_bitwrit.com.au>
Date: Tue, 12 Feb 2008 22:03:47 +1100

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?
>
order(as.roman(c("XIV","LVI","XXI","VI")))

Jim



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