[R] Sort a data frame

[Petr Pikal]

Hallo

or you can

your.df[order(your.df$year),]

Cheers

Petr


On 20 Jul 2004 at 14:35, Yves Magliulo wrote:

> hi,
> i had this trouble a while ago and found this function in latest
> R-help. SortMat <- function(Mat, sort) {
>         m <- do.call("order", as.data.frame(Mat[, Sort]))
>         Mat[m, ]
> }
> 
> where mat is a matrix and sort the column you want to be sorted.
> convert you dataframe into matrix or change this function to be used
> with dataframe.
> 
> Best,
> 
> 
> 
> Le mar 20/07/2004 ŕ 10:51, Luis Rideau Cruz a écrit :
> > Hi all 
> > 
> > I have the next data frame 
> > 
> >     year   STOD    SLAGNR  TAL TALT   TALVEKT
> > 1 2002  2120006     57      1      NA      1
> > 2 1997  97030032    57     NA   NA      NA
> > 3 1997  97030071    27     1      NA      NA
> > 4 1997  97030005    57     1      NA      NA
> > 5 1997  97020127    60     NA   1         NA
> > 6 2001  1160025     27      1      NA      1
> > 7 1998  98020069    60     1      NA      NA
> > 8 1996  96030009    57     NA   1         NA
> > 
> > How to sort it according to "year" column
> > Sort does seem to work only on vectors
> > 
> > Thank you
> > 
> > Luis Ridao Cruz
> > Fiskirannsóknarstovan
> > Nóatún 1
> > P.O. Box 3051
> > FR-110 Tórshavn
> > Faroe Islands
> > Phone:             +298 353900
> > Phone(direct): +298 353912
> > Mobile:             +298 580800
> > Fax:                 +298 353901
> > E-mail:              luisr at frs.fo
> > Web:                www.frs.fo
> > 
> > ______________________________________________
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> > PLEASE do read the posting guide!
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> -- 
> ------
> Yves Magliulo <ym at climpact.com>
> Climatology research department, CLIMPACT
> 
> Tel.   : +33 (0) 1 55 07 85 77
> Fax.   : +33 (0) 1 55 07 85 79
> Universite Pierre et Marie Curie
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> 
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Petr Pikal
petr.pikal at precheza.cz