From: Michael Lake (mikel_at_speleonics.com.au)
Date: Wed Jan 24 2001 - 10:55:27 CET
Received: (from mdom_at_localhost) by karto.ethz.ch (8.9.3/8.9.3/SuSE Linux 8.9.3-0.1) id NAA08250 for cavexml-outgoing; Wed, 24 Jan 2001 13:05:13 +0100 Received: from iggy.triode.net.au (IDENT:root_at_iggy.triode.net.au [203.63.235.1]) by karto.ethz.ch (8.9.3/8.9.3/SuSE Linux 8.9.3-0.1) with ESMTP id NAA08246 for <cavexml_at_cartography.ch>; Wed, 24 Jan 2001 13:05:11 +0100 Received: from speleonics.com.au (mikel_at_dm1-23.triode.net.au [203.63.34.24]) by iggy.triode.net.au (8.11.1/8.10.1) with ESMTP id f0OC5TY29409 for <cavexml_at_cartography.ch>; Wed, 24 Jan 2001 23:05:29 +1100 Message-ID: <3A6EA68F.7B6D29C3@speleonics.com.au> Date: Wed, 24 Jan 2001 20:55:27 +1100 From: Michael Lake <mikel_at_speleonics.com.au> X-Mailer: Mozilla 4.73 [en] (X11; I; Linux 2.2.14 i686) X-Accept-Language: en To: "cavexml_at_cartography.ch" <cavexml_at_cartography.ch> Subject: Re: LRUD: 'From' or 'To' ? References: <Pine.GSO.4.05.10101230826080.9398-100000_at_cor.oz.cc.utah.edu> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-cavexml_at_karto.baug.ethz.ch Precedence: bulk Reply-To: cavexml_at_cartography.ch
Hi all,
With regards to my:
> > >This was what I came up with early last year. The idea is taken from geology.
> > ><SHOT FROM="88" TO="88a" AZIM="7.18" ELEV="10" DIST="+44.5" >
> > > This shot was a bit difficult.</SHOT>
> Interesting assumption that a "shot" has only one measurement of one each of
> Distance, Azimuth, and Inclination.
> I'll guess that the format also allows back azimuth and back inclination.
Yes. no prob there.
> But I wonder if it includes Back Azimuth read as foresight, etc.?
But im lost here. Not sure what you mean.
> Seriously, there are cases (Such as very back sighting conditions) where
> there could be many different observations of (for example) azimuth.
I have an ACCURACY= attribute that is the mean or standard deviation eg for a Suunto
handhelp one might have ACCURACY=0.5 UNITS=degrees
But one can still include multiples such as:
<SHOT FROM="88" TO="88a" AZIM="6.5" ELEV="10" DIST="+44.5" >
<SHOT FROM="88" TO="88a" AZIM="7.5" ELEV="10" DIST="+44.5" >
<SHOT FROM="88" TO="88a" AZIM="7.5" ELEV="10" DIST="+44.5" >
Survex can handle multiple legs like this and its really up to the software processing the
XML to interpret what to do with this data. The surveyor/data entry person will decide if
they want to include all repeated shots or average them and specify an accuracy override
for that data.
> Formats that make assumtions about how shots are normally done are going
> to make it so I can't represent data I already have.
> <point name="cornute5" id="34">
> ...
> <direction azimuth="7.18 />
> <direction azimuth="10.5 />
> <inclination value="-10" />
> <distance value="20.0" />
> ...
> <point name="malakia-6" id="35">
Your point element is same as my STATION element. Where we differ is that I separate the
shot from the station. I think they are different 'entities'.
> That's not a whole lot better, but it at least allows repeated measurements.
See above. You can have repeated measurements. We certainly want them.
> > Interesting construction. A question: is a shot made up of the data or are they attributes of the
> > shot? ie is a shot aggregation or just attributes?
Yes its a difficult question. Good to see lots of ideas here. Its not crystal clear and we
have to get it right for cavers :-)
Mike
-- -------------------------------------------------------------------- Michael Lake Active caver, Linux enthusiast and interested in anything technical. Safety Convenor, Australian Speleological Federation Owner, Speleonics (Australia) --------------------------------------------------------------------
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