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Feature Catalogue Services 1st August 2010 Kim Finney (Manager, Australian Antarctic Data Centre & Chief Officer, SCAR Standing Committee on Antarctic Data Management). http://ceos.org 100,50,2 300,75.4 X=56. What Are Feature Types.

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What Are Feature Types

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What are feature types

Feature Catalogue Services1st August 2010Kim Finney (Manager, Australian Antarctic Data Centre & Chief Officer, SCAR Standing Committee on Antarctic Data Management)


What are feature types

http://ceos.org

100,50,2

300,75.4

X=56

What Are Feature Types

Feature Types: Real world objects (e.g. Bicycle, Tyre, Road, River, Airport, Mountain, CTD Observation, ARGO Float Observation)

WCS

coverage data

WMS

maps

WFS

feature data

<Roads>

<Road>

<gml:name>M11</gml:name>

<gml:centerLineOf>

<gml:LineString

srsName="EPSG:4326">

<gml:coordinates>

0,5.0

20.6,10.7

80.5,60.9

</gml:coordinates>

</gml:LineString>

</gml:centerLineOf>

<classification>motorway</classification>

<number>11</number>

</Road>

</Roads>


What are feature types

Used in Gazetteers

Gazetteer_Name: David Range

Latitude: 67° 50' 00.0" S

Longitude: 62° 32' 17.0" E

SCAR_Gaz Id: 3364

Feature_Type: Range

Feature_Type Id: 7

Feature Instance: David Range

Feature Instance Id: 3364


Feature catalogue

Feature Catalogue


From application to service

From Application To Service

  • Take opportunity to enhance catalogue data model

    • Capture information on Community Profiles (i.e. agreed suites of feature-types, their attributes - their units of measure and datums, feature-type relationships and classification schemes used, all linked to a specific user community or use by a computer-based tool);

    • Assign one or more spatio-temporal geometries to a feature-type,

    • List Classification Schemes and Themes that feature-types might be associated with, and

    • Exercise the feature association component of the ISO model to record information about relationships between features (both internal and external to the catalogue).

  • Chose to create RESTful (Representational State Transfer) Services


What are feature types

  • Developed 3 types of service to meet different use-cases

  • A typical REST Service query looks like:

  • …/StreamlinedCatalogueService/Profiles/1/FeatureTypes/10/Format/XML

  • This service returns information on Feature Type with ID=10 that belongs to Community Profile ID=1 in an XML format.

  • Using this particular type of service call (i.e. a StreamlinedCatalogue Service) a client is able to:

    • Get all features for profile n

    • Get all features for all profiles

    • Get feature n in profile n


What are feature types

  • …/IterativeCatalogueService/Profiles/1/FeatureTypes/10/Attribute/3/Format/SKOS

  • This service returns information on Attribute with ID=3 associated with Feature Type with ID=10 that belongs to Community Profile ID=1 in a SKOS format.

  • Using this particular type of service call (i.e. a IterativeCatalogue Service) a client is able to:

    • Get profile n or all profiles,

    • Get all features for profile n,

    • Get all features for all profiles,

    • Get feature n in profile n,

    • Get attribute n, or all attributes for feature type n in profile n,

    • Get geometry n, or all geometries for feature type n in profile n, and

    • Get UoM n and associated Datum, or all UoMs for attribute n in feature type n in profile n


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