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Message-ID: <CAKL8G3E66voAQz8rK+0LeBZQ2fjfNQSm4o+5be=hgzssfo0TGg@mail.gmail.com> Date: 2011-11-23T19:47:19Z From: Jorge I Velez Subject: zeros to NA's - faster In-Reply-To: <CAG2PC+cb2tkJr8Qu1rKV=cTxMgn3gTcnau-QeVdoH6WAnWxBbg@mail.gmail.com> An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20111123/0b2ba0f9/attachment.pl>