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Message-ID: <CAOwh97szcM39btUf7ew-=D+uwd1eeaKoTFTUWKVqds_ADSHx9w@mail.gmail.com> Date: 2011-12-02T18:28:35Z From: Aurélien PHILIPPOT Subject: Problem subsetting: undefined columns In-Reply-To: <33DACDEA-8EF7-4414-A81B-D869C0AB94FD@gmail.com> An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20111202/34d596d8/attachment.pl>