Raw Message
Message-ID: <CACk-te3Z=t28immeJhUWd5gOjONQ2mK+MH2p-PPqpNkdBaFDiQ@mail.gmail.com> Date: 2011-10-12T20:45:09Z From: Bert Gunter Subject: treat NA's as zero when summed up with numbers In-Reply-To: <89FC93D2-7FFC-4A80-A269-4DAC666E23A6@comcast.net> An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20111012/44b87f75/attachment.pl>