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Message-ID: <blu150-w30F4C465C9166B255AE1F8A92B0@phx.gbl> Date: 2010-12-06T17:13:05Z From: Marianne Stephan Subject: How can I refer to actual (n) and previous (n-1) elements in a vector? An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20101206/1b2adabd/attachment.pl>