[From nobody Thu Oct 23 22:49:25 2008 Received: from mail143.messagelabs.com (216.82.254.35) by 767M-CAHT.goldbox.com (192.168.110.215) with Microsoft SMTP Server id 8.1.291.1; Thu, 23 Oct 2008 14:37:55 -0400 X-VirusChecked: Checked X-Env-Sender: r-help-bounces@r-project.org X-Msg-Ref: server-3.tower-143.messagelabs.com!1224787072!42049292!1 X-StarScan-Version: 5.5.12.14.2; banners=-,-,- X-Originating-IP: [129.132.145.15] X-SpamReason: No, hits=0.0 required=7.0 tests= Received: (qmail 24206 invoked from network); 23 Oct 2008 18:37:54 -0000 Received: from hypatia.math.ethz.ch (HELO hypatia.math.ethz.ch) (129.132.145.15) by server-3.tower-143.messagelabs.com with AES256-SHA encrypted SMTP; 23 Oct 2008 18:37:54 -0000 Received: from hypatia.math.ethz.ch (hypatia [129.132.145.15]) by hypatia.math.ethz.ch (8.14.1/8.14.1) with ESMTP id m9NIbDDQ009796; Thu, 23 Oct 2008 20:37:37 +0200 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on hypatia.math.ethz.ch X-Spam-Level: X-Spam-Status: No, score=-3.8 required=5.0 tests=AWL, BAYES_00, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.2.5 Received: from phil3.ethz.ch (phil3.ethz.ch [129.132.202.239]) by hypatia.math.ethz.ch (8.14.1/8.14.1) with ESMTP id m9NIOq8G031347 for <r-help@r-project.org>; Thu, 23 Oct 2008 20:24:53 +0200 Received: from outmail128096.authsmtp.co.uk ([62.13.128.96]) by phil3.ethz.ch with esmtp (Exim 4.66) (envelope-from <pburns@pburns.seanet.com>) id 1Kt4rh-0006IB-AP for r-help@r-project.org; Thu, 23 Oct 2008 20:24:59 +0200 Received: from mail-c189.authsmtp.com (mail-c189.authsmtp.com [62.13.128.71]) by punt5.authsmtp.com (8.14.2/8.14.2/Kp) with ESMTP id m9NIOmRl056904; Thu, 23 Oct 2008 19:24:48 +0100 (BST) Received: from [192.168.2.15] (host86-129-89-71.range86-129.btcentralplus.com [86.129.89.71]) (authenticated bits=0) by mail.authsmtp.com (8.14.2/8.14.2/Kp) with ESMTP id m9NIOlM8083930; Thu, 23 Oct 2008 19:24:48 +0100 (BST) Message-ID: <4900C171.1090103@pburns.seanet.com> Date: Thu, 23 Oct 2008 19:24:49 +0100 From: Patrick Burns <pburns@pburns.seanet.com> User-Agent: Thunderbird 2.0.0.17 (Windows/20080914) MIME-Version: 1.0 To: megh <megh700004@yahoo.com> References: <20136201.post@talk.nabble.com> In-Reply-To: <20136201.post@talk.nabble.com> X-Server-Quench: dfe5c1f8-a12f-11dd-bc7a-001f29070be2 X-AuthRoute: OCdwYA8TAVZNRhkA DDgsFCVdUwM+YAZB CBkOMU1RJ18fUBlV LkdCKlcTahwKHwoe fDVPRFZUUFVhWGp/ aQ5baQ0TakxQXgdj TkBAXFVTCwdtAxke BlBDW2cLCFk7cH54 Zk9hXj5aWUZyOxIr F0sHFDsOeDZhajYC UUEMIx4GIwQbYx9F awZ9XXMKYTdSZDQC El17DAoEdX1hBQ8d ZRkAN1sORlxDHzh0 fXhs X-Authentic-SMTP: 61633330373632.kestrel.dmpriest.net.uk:1378/Kp X-Report-SPAM: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-Virus-Status: No virus detected - but ensure you scan with your own anti-virus system! X-USF-Tag-Only: YES X-USF-Filter-Node: phil3.ethz.ch X-USF-Spam-Level: -- X-USF-Spam-Status: hits=-2.6 tests=BAYES_00 X-USF-Spam-Flag: NO X-USF: X-Virus-Scanned: by amavisd-new at stat.math.ethz.ch CC: <r-help@r-project.org> Subject: Re: [R] VEC Operator in R X-BeenThere: r-help@r-project.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: "Main R Mailing List: Primary help" <r-help.r-project.org> List-Unsubscribe: <https://stat.ethz.ch/mailman/options/r-help>, <mailto:r-help-request@r-project.org?subject=unsubscribe> List-Archive: <https://stat.ethz.ch/pipermail/r-help> List-Post: <mailto:r-help@r-project.org> List-Help: <mailto:r-help-request@r-project.org?subject=help> List-Subscribe: <https://stat.ethz.ch/mailman/listinfo/r-help>, <mailto:r-help-request@r-project.org?subject=subscribe> Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: <r-help-bounces@r-project.org> Errors-To: r-help-bounces@r-project.org Return-Path: r-help-bounces@r-project.org X-MS-Exchange-Organization-OriginalArrivalTime: 23 Oct 2008 18:37:55.3865 (UTC) X-MS-Exchange-Organization-AuthSource: 767M-CAHT.goldbox.com X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-OriginalSize: 5012 X-MS-Exchange-Organization-Recipient-Limit-Verified: True For 'VEC' you may not need to do anything -- in a lot of circumstances it will just work. For 'VECH' you can write a function using the 'lower.tri' function. But it seems to me that the assumption behind your question is that a simple function that someone else has written is going to be better than a simple function that you write. Not true (barring bugs). R is egalitarian -- your functions have the same standing as "official" functions. A lot of times it is faster to write a function of your own rather than search out someone else's even if you know such functions exist. Patrick Burns patrick@burns-stat.com +44 (0)20 8525 0696 http://www.burns-stat.com (home of S Poetry and "A Guide for the Unwilling S User") megh wrote: > Can anyone please tell whether there is any R function to act as "VEC" and > "VECH" operator on Matrix? Yes of course, I can write a > user-defined-function for that or else, I can put dim(mat) <- NULL. However > I am looking for some R function. > > Your help will be highly appreciated. > > Regards, > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. ]