Raw Message

Message-ID: <SNT145-W284919167DDC29F14C5893D8180@phx.gbl>
Date: 2013-01-28T19:50:06Z
From: Bart Joosen
Subject: sorting/grouping/classification problem?
In-Reply-To: <mailman.5020.1359400870.4600.r-help@r-project.org>

An embedded and charset-unspecified text was scrubbed...
Name: not available
URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20130128/7e7a6a66/attachment.pl>