R help - Dec 2009 - Sort a data frame according to romans

R-help,

I have a data frame:
> mydata
   strata nh  Nh    Wh    fh
1       I 10  26 0.048 0.385
2      II 32  84 0.154 0.381
3     III 16  42 0.077 0.381
4      IV  4  11 0.020 0.364
5       V 10  26 0.048 0.385
7     VII 64 168 0.309 0.381
8    VIII 49 129 0.237 0.380
9      IX 22  58 0.107 0.379
91     VI  0   0 0.000 0.000

and I wish to rearrange the data are sorted according to the roman (first
column):

I,II,III,IV,V,VI,VII,VIII,IX


Thanks in advance

Try this:

mydata[order(as.roman(as.character(mydata$strata))),]

On Tue, Dec 8, 2009 at 11:59 AM, Luis Ridao Cruz <Luisr at hav.fo>
wrote:
> R-help,
>
> I have a data frame:
>
>> mydata
> ? strata nh ?Nh ? ?Wh ? ?fh
> 1 ? ? ? I 10 ?26 0.048 0.385
> 2 ? ? ?II 32 ?84 0.154 0.381
> 3 ? ? III 16 ?42 0.077 0.381
> 4 ? ? ?IV ?4 ?11 0.020 0.364
> 5 ? ? ? V 10 ?26 0.048 0.385
> 7 ? ? VII 64 168 0.309 0.381
> 8 ? ?VIII 49 129 0.237 0.380
> 9 ? ? ?IX 22 ?58 0.107 0.379
> 91 ? ? VI ?0 ? 0 0.000 0.000
>
> and I wish to rearrange the data are sorted according to the roman (first
column):
>
> I,II,III,IV,V,VI,VII,VIII,IX
>
>
> Thanks in advance
>
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>


-- 
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O