[R] ordering a matrix by multiple columns

[Uwe Ligges]

Michael Dondrup wrote:
> 
> Dear all,
> 
> is there an easy way to sort or get the order of a matrix or data.frame
> by multiple rows
> (like ODER BY in SQL), that means if some values in the first column are
> equal, then sort them (or 'order') by the second etc.?

What about looking in the help files? My first idea would be to take a
look at ?sort and ?order, two words you already mentioned in your
querstion. And I'd bet you'll get the answer.

Uwe Ligges
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