[R] Sorting in R
thomas at biostat.washington.edu
Wed Jun 21 17:40:52 CEST 2000
On Wed, 21 Jun 2000, Jim Robison-Cox wrote:
> On Wed, 21 Jun 2000, Art Salwin wrote:
> > How do you sort one vector using another vector as a sort
> > key? Sort of equivalent
> > to sorting rows of a spreadsheet using one of its columns as
> > key. Here's a simple example:
> > Having secondary keys to break ties would be nice, as would
> > the ability to sort (in this example)
> > all 3 vectors at once.
> That's a bit harder, I would sort first on the secondary column, then
> the primary. Or tertiary - secondary - primary.
If you look at the doucmentation for order() you will find that it allows
secondary and tertiary keys. There's even an example.
Assistant Professor, Biostatistics
University of Washington, Seattle
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