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From: Rob Atkinson ([email protected])
Date: Thu Jun 12 2003 - 13:45:39 EST


Hi Dave,

Good to see the continued focus on the move from documenting data sets
to providing actual services!

This specific approach has been tried several times overseas and has its
advantages and disadvantages. One lesson is that for any approach to
work there needs to be formal (and scalable) policy, information model
and implementation plans behind it. Can you shed any further light on
these three aspects of your experiment?

Regards

Rob Atkinson

David Crossley wrote:

>The following search interface discovers datasets that are
>also mapping services. This searches the current ASDD.
>Use the default search, which finds the only two known records.
>http://www.indexgeo.net/zap/getmap/
>
>The relevant metadata records have an additional section of metadata
>utilising the "linkage" elements from ISO metadata. This extends
>the ANZLIC core metadata using the official extension facilities
>to add Page 1 elements for the vital missing linkage elements.
>
>In this way, we can describe each "layer" that is also a "service"
>at a high-level using traditional metadata. This provides direct
>linkage to each actual mapping service and to its "capability statement"
>for the specific service information.
>
>This also demonstrates one other very important aspect. Change the
>default record syntax from HTML to XML, then you will see that the
>"Resource" element set returns a fragment of XML. This enables
>automated clients to search the ASDD for mapping services, and conduct
>further processing to present the results and even automatically
>retrieve each capability statement.
>
>--David Crossley
>
>
>
>
>


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