[R] sort a data frame according to roman characters

Luis Ridao Cruz Luisr at frs.fo
Tue Feb 12 11:36:50 CET 2008


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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