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...ns is obviously the first step. I really appreciate it. Thanks! -Noah -------------- next part -------------- A non-text attachment was scrubbed... Name: graph2.pdf Type: application/pdf Size: 290782 bytes Desc: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20090825/157cd8e1/attachment-0004.pdf> -------------- next part -------------- A non-text attachment was scrubbed... Name: graph1.pdf Type: application/pdf Size: 289181 bytes Desc: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20090825/157cd8e1/attachment-0005.pdf>