[R] Double sort a data frame

[Jacques VESLOT]

> class(df)
[1] data.frame

> names(df)
[1] "x" "y" "z"

df <- df[order(df$x, df$y),]		# sort df by x and y with priority to x



-----Message d'origine-----
De : r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch]De la part de Luis Ridao Cruz
Envoye : vendredi 11 fevrier 2005 16:03
A : r-help at stat.math.ethz.ch
Objet : [R] Double sort a data frame


R-help,

Long ago I asked how to sort a data frame according to one of the
columns.
But Iwas wondering ho I could "double sort" , i.e, sort according to
one column and another one afterwards.
It is quite easy in Excel but  I am unable to implemented in R.


I have searched in the R help archives and found nothing.


Thank you in advance.

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