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Message-ID: <CAK87KAsp54L_BJzy4+-PzJkHkoj2gWi_NH8vqGSJbXi+M=6Veg@mail.gmail.com> Date: 2011-09-09T14:04:39Z From: Josh Tewksbury Subject: grid overlay An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-sig-geo/attachments/20110909/952c1fce/attachment.pl>