Re: Finding groupings

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From: Richard Knapp (gyp_caver_at_yahoo.com)
Date: Thu Feb 08 2001 - 14:20:39 CET 

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From: "Richard Knapp" <gyp_caver_at_yahoo.com>
To: "cavexml_at_cartography.ch" <cavexml_at_cartography.ch>
Date: Thu, 08 Feb 2001 08:20:39 -0500 (EST)
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Subject: Re: Finding groupings
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>Richard Knapp wrote:

>> So would a view of the data be done via a separate file (ick!), an XSL (?)
>> transform (unlikely), or ? I would say that information would still have to be
>> stored in the main data file. > Maybe it could be broken into sections; one
>> for the data, one for views, another for ?.

>What is the point of a separate section? If you have a separate section
>then something has to be repeated, either unique station name Ids or..

Nope. Using XPointer you could just arrange the surveys in a tree (a grouping) consistent with the
way you want to see the data. That is all. Since it's just pointers to the original data, there is no
duplication.

As Garry and Devin stated, the data is not the same as the view. We _can_ integrate the data with
the view but it is imposing an artificial structure on the data. The data is just that. The way we want
to see the data is our view of it. That is the reason for the separate sections.

Using XSL/XSLT would be an interesting way to support this but it might prove to be rather
burdensome considering the transform from original the the view and back to save it.

>Note also that specifying a path to a part of the data in
>order to provide a view is something I see as outside of caveXML.

If you took the data from your system to another, would you want that view to go along? If so,
would it be better to have two separate files or one file?

>Providing groupings is useful for several reasons:

>(1) so that someone can ask for some interesting operation of their
>software (like reading it into whatever the native format is),
>to be performed on only a subset of an caveXML file.

Agreed. But the software really doesn't care unless we tell it to. So that too is no more than our
view on the data.

>(2) so that the names given to the parts of the cave can be
>recorded in the data (even if no one has any means of using
>those names).

Are the names part of the survey data or how we look at the survey data?

FWIW...

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