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Message-ID: <CAMu32AChKuYvr+yJ7cJA87amSbj-xc8Fx1ezPcTf7Ou8bvBgxA@mail.gmail.com> Date: 2012-11-27T13:30:57Z From: TheRealJimShady Subject: Using cumsum with 'group by' ? In-Reply-To: <1353682797.55994.YahooMailNeo@web142606.mail.bf1.yahoo.com> An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20121127/213a8179/attachment.pl>