From: Garry Petrie (gp_at_europa.com)
Date: Thu Jan 25 2001 - 17:13:45 CET
Received: (from mdom_at_localhost) by karto.ethz.ch (8.9.3/8.9.3/SuSE Linux 8.9.3-0.1) id RAA17395 for cavexml-outgoing; Thu, 25 Jan 2001 17:22:56 +0100 Received: from io.europa.com (IDENT:root_at_io.europa.com [216.65.131.2]) by karto.ethz.ch (8.9.3/8.9.3/SuSE Linux 8.9.3-0.1) with ESMTP id RAA17391 for <cavexml_at_cartography.ch>; Thu, 25 Jan 2001 17:22:54 +0100 Received: from europa.com (ip85.gte15.rb1.bel.nwlink.com [209.20.244.85]) by io.europa.com (8.11.1/8.11.1) with ESMTP id f0PGRW627531 for <cavexml_at_cartography.ch>; Thu, 25 Jan 2001 08:27:32 -0800 (PST) Message-ID: <3A7050B9.2060601@europa.com> Date: Thu, 25 Jan 2001 08:13:45 -0800 From: Garry Petrie <gp_at_europa.com> User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; m18) Gecko/20001108 Netscape6/6.0 X-Accept-Language: en,pdf To: cavexml_at_cartography.ch Subject: Re: Blunders Was: LRUD: 'From' or 'To' ? References: <200101232158.WAA04334_at_karto.ethz.ch> <3A6EAA74.14A5A671_at_speleonics.com.au> <3A6EF60F.4030702_at_aic.nrl.navy.mil> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-cavexml_at_karto.baug.ethz.ch Precedence: bulk Reply-To: cavexml_at_cartography.ch
Ralph Hartley wrote:
>
> But this is wrong!
>
> Vertical shots, where inclination is +-90 degrees, do not have a valid
> azimuth. Some programs do require you to make up a number (which
> shouldn't affect the results), but it is not really correct to do so.
Requiring a bearing for vertical shots is a consequence of parsing shot data from fields
of a line. Not a problem in XML. Furthermore, the value of bearing in a vertical shot
would be handled by the default value assigned in the schema.
Garry Petrie
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