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Message-ID: <CAKL8G3GXBGZW9Ct0_HdGQOyL68fjKyts9HousqqexgcDe0vm9w@mail.gmail.com> Date: 2012-12-18T14:43:40Z From: Jorge I Velez Subject: Summarizing elements for a data.frame In-Reply-To: <CA+dpOJkm07kV17mSYqH1np-cbJDUMiEb408F+OzroX0eJmEyAg@mail.gmail.com> An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20121219/26ac49a1/attachment.pl>