From chiefmurphy at gmail.com  Mon Jan 23 16:07:01 2012
From: chiefmurphy at gmail.com (Dan Murphy)
Date: Mon, 23 Jan 2012 07:07:01 -0800
Subject: [Rd] factor S4 class is NA when as.character method exists
Message-ID: <CAHgH9_F0s+QfZfamfJszfbyt=s7gC=--eOSNFMrkdhGzTZgR-g@mail.gmail.com>

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[Rd] factor S4 class is NA when as.character method exists
Dan Murphy