Message-ID: <77819e7765b4.7765b477819e@jhsph.edu>
Date: 2003-04-07T22:21:47Z
From: Ravi Varadhan
Subject: How to sort a dataframe?
How does one sort a dataframe on multiple columns, say you first sort
on variable 1 and then on variable 2, etc.? Is there a simple, one-
liner to do this?
thanks,
Ravi.
----- Original Message -----
From: Spencer Graves <spencer.graves at pdf.com>
Date: Monday, April 7, 2003 2:07 pm
Subject: Re: [R] How to sort a dataframe?
> > tester <- data.frame(one=c(3,2,1), two=c(2,3,1))
> > tester[order(tester$one),]
> one two
> 3 1 1
> 2 2 3
> 1 3 2
> >
> Spencer Graves
>
> Remko Duursma wrote:
> > Dear R-helpers,
> >
> > for the purpose of plotting a dataframe, i am trying to sort a
> dataframe by one column, for example
> >
> > tester <- data.frame(one=c(3,2,1), two=c(2,3,1))
> >
> > #> tester
> > # one two
> > #1 3 2
> > #2 2 3
> > #3 1 1
> >
> > # I want to sort "tester" by column "one", so that i get a dataframe
> > # that looks like:
> > #one two
> > #1 1
> > #2 3
> > #3 2
> >
> > I know of 'sort' but it can only sort vectors.
> >
> > Thanks for your help,
> >
> > Remko Duursma
> >
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>
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