[auscope-geosciml] Borehole sampling curve [SEC=UNCLASSIFIED]

Simon.Cox at csiro.au Simon.Cox at csiro.au
Thu May 31 20:15:10 EDT 2012

That would not be conformant GML.
There is a normative constraint in the GML spec that requires either element content or xlinks.
The constraint cannot be detected by XSD 1.0, but that reflects a weakness of XSD not GML.

A more logically correct way to handle this is

<sams:shape xlink:href="http://www.opengis.net/def/nil/OGC/0/unknown"/>

No change to the schema required.

From: auscope-geosciml-bounces at lists.arcs.org.au [mailto:auscope-geosciml-bounces at lists.arcs.org.au] On Behalf Of Oliver.Raymond at ga.gov.au
Sent: Friday, 1 June 2012 6:53 AM
To: jll at bgs.ac.uk; steve.richard at azgs.az.gov
Cc: auscope-geosciml at lists.arcs.org.au
Subject: Re: [auscope-geosciml] Borehole sampling curve [SEC=UNCLASSIFIED]

Hi John, Steve,

If I remember correctly, our issue with Borehole being a generalisation of SF_SamplingCurve, rather than just an association, was that it meant that there was a mandatory "shape" (ie, curve) element - which is data that many legacy boreholes do not have.  I was testing Borehole XML instances at GA yesterday and noticed that although the "shape" element is mandatory, it can be left empty and the XML is still valid.

Does this allay our concerns about the mandatory "shape" element for boreholes, without having to change the GeoSciML model?



Ollie Raymond
Section Leader  |  National Geological Maps and Data Standards Section
Minerals and Natural Hazards Division  |  GEOSCIENCE AUSTRALIA

Interoperability Working Group
IUGS Commission for the Management and Application of Geoscience Information

Phone:  +61 2 6249 9575    Fax:  +61 2 6249 9917
Email:  Oliver.Raymond at ga.gov.au<mailto:Oliver.Raymond at ga.gov.au>    Web:  www.ga.gov.au<http://www.ga.gov.au/>
Cnr Jerrabomberra Avenue and Hindmarsh Drive Symonston ACT
GPO Box 378 Canberra ACT 2601 Australia

Applying geoscience to Australia's most important challenges

From: Laxton, John L. [mailto:jll at bgs.ac.uk]
Sent: Friday, 1 June 2012 01:51
To: Raymond Oliver
Cc: auscope-geosciml at lists.arcs.org.au
Subject: Borehole sampling curve

Hi Ollie,

Following on from our discussions in Redlands regarding the relationship between Borehole and SF_SamplingCurve I have changed this in the INSPIRE geology model to be a directed association rather than generalisation (see below). However, as we discussed, something equivalent should be implemented in GeoSciML, particularly as we now intend to mandate GeoSciML encoding for INSPIRE Geology. Should there be a v3.1 to address this?


(the diagram seemed to get scrambled via the mail list - here it is again!)

[cid:image001.jpg at 01CD3FCD.E2FE61E0]

John Laxton
British Geological Survey
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