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Message-ID: <408985.54792.qm@web52812.mail.re2.yahoo.com>
Date: 2009-02-06T22:29:41Z
From: Bill Hyman
Subject: How to sort a matrix or dataframe by two columns?

Dear all,

I have a matrix data and would like to sort it by col 1 first and then sort it by col 2. Can I do it in R? Thanks a lot!

Bill