Message-ID: <1619660742.53551262505946842.JavaMail.coremail@app6.yeah.net>
Date: 2010-01-03T08:06:15Z
From: bbslover
Subject: Please help me!!!! Error in `[.data.frame`(x, , retained, drop = FALSE) : undefined columns selected
In-Reply-To: <6731304c1001021144g7da9d6c4y622b483bac78ea76@mail.gmail.com>
An embedded and charset-unspecified text was scrubbed...
Name: not available
URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20100103/c638c77e/attachment.pl>