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Message-ID: <3647189.17d77.1343b2b0438.Coremail.lm_mengxin@163.com> Date: 2011-12-14T06:03:22Z From: 孟欣 Subject: New question In-Reply-To: <CAKL8G3GfvnJ4Xd7RMkzgL2Rcxg4E3ou30w83St0by5iVGtAFgQ@mail.gmail.com> An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20111214/8e4f3264/attachment.pl>