[R] Sort a data frame

[Yves Magliulo]

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 à 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
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-- 
------
Yves Magliulo <ym at climpact.com>
Climatology research department, CLIMPACT

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