Message-ID: <1351018070600-4647199.post@n4.nabble.com>
Date: 2012-10-23T18:47:50Z
From: noobmin
Subject: How to use tapply with more than one variables grouped
In-Reply-To: <1351015114.17562.YahooMailNeo@web142602.mail.bf1.yahoo.com>
Thank you! This seems to work, just do not understand why you used a
threshold?
I will study your solution, thanks again!
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