From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Thomas S. Dye" Subject: Re: Re: [babel] R questions Date: Tue, 8 Dec 2009 06:00:58 -1000 Message-ID: References: <87tyw674n2.fsf@mundaneum.com> <87aaxy8czu.fsf@stats.ox.ac.uk> <87fx7laj6w.fsf@mundaneum.com> Mime-Version: 1.0 (Apple Message framework v936) Content-Type: text/plain; charset=ISO-8859-1; format=flowed; delsp=yes Content-Transfer-Encoding: quoted-printable Return-path: Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NI2V4-0003hs-MT for emacs-orgmode@gnu.org; Tue, 08 Dec 2009 11:01:18 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NI2Uz-0003hG-8Y for emacs-orgmode@gnu.org; Tue, 08 Dec 2009 11:01:17 -0500 Received: from [199.232.76.173] (port=34866 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NI2Uz-0003hD-2m for emacs-orgmode@gnu.org; Tue, 08 Dec 2009 11:01:13 -0500 Received: from outbound-mail-309.bluehost.com ([67.222.54.2]:35772) by monty-python.gnu.org with smtp (Exim 4.60) (envelope-from ) id 1NI2Uy-0000AZ-FM for emacs-orgmode@gnu.org; Tue, 08 Dec 2009 11:01:12 -0500 In-Reply-To: <87fx7laj6w.fsf@mundaneum.com> List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: =?ISO-8859-1?Q?S=E9bastien_Vauban?= Cc: emacs-orgmode@gnu.org Aloha Sebasien, On Dec 7, 2009, at 11:50 PM, S=E9bastien Vauban wrote: > But what's a "NA" value in general? Is 0 always a meaningful value as > numeric? Context-sensitive.. > NA is a logical constant of length 1 which contains a missing value =20 indicator. Whether or not 0 is a meaningful value as numeric depends =20= on your data and the questions you are asking of it. You don't ask =20 this question, but if I read this thread correctly and you are trying =20= to workaround a data input problem with R in Org-babel, then replacing =20= missing values with 0 in a numeric context to get around the Org-babel =20= problem is NOT a good idea. HTH, Tom