Re: Groupings

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From: Richard Knapp (gyp_caver_at_yahoo.com)
Date: Wed Jan 31 2001 - 12:35:02 CET


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From: "Richard Knapp" <gyp_caver_at_yahoo.com>
To: "cavexml_at_cartography.ch" <cavexml_at_cartography.ch>
Date: Wed, 31 Jan 2001 06:35:02 -0500 (EST)
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Subject: Re: Groupings
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>"As long as you can get hold of..." yes that is exactly the problem!
>If you have a several mile system in front of you and you want to
>load up some interesting part into some bit of software trick modeling
>software being able to find some logical 'chunk' of data is a very useful
>operation.
>
>Since another thread has suggested a tag for text, we can summarize as:
>
><text name=xxxx, date=yyyy, author=zzzz language=aaaaa>
>
>let's build on that and run with another strawman construction.
>What if we just had one way to group things, with a nice set of
>attributes.
>
><ChunkOCaveData name=aaaaa, type=bbbb date=ccccc ...>
>....
></ChunkOCaveData>

Sounds good. That would open to possibility to allow surveys to be nested as is done with
Survex. It would also allow sections of the cave to be grouped (type="area"
name="Entrance Series") or caves themselves to be grouped (type="system"
name="OFD-Wookeys" ;)

>In other words, prove to me some set of tags are actually semantically
>important otherwise and until then I'll keep thinking of just one hierarchy with
>arbitrary names and types. For example, someones example <subsurvey> tag seems
>like a tag that could easily be done with something more generic.

I guess at that point it would depend on the type defined in the Schema. If the type
requires certain data like a survey would - date, declination, personnel, positions, etc -
would the constraints be relaxed when items are nested? Or would there be a special
subtype of "Grouping" that must have more data?

In the Survey/SubSurvey instance, a survey was only a name (letter) with a description.
The SubSurvey had all the other stuff.

>The above scheme would allow anyone to group anything they wanted:
>survey, cave, system, room, underwater shots, surface survey, historic
>survey. Literally you name, I don't care? Do I?

I guess that depends on if the format needs to enforce any standards on surveying
(required data).

>I'd bet that there were important groupings which don't fit this scheme,
>but I'd like to start from this 'typed and name group' idea and then...

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