Post on 21-Feb-2016
description
1 Interoperability Work Group
Brodaric, 14-03-2007
1G, Interoperability, andGeoSciML
Boyan Brodaric, Geological Survey of Canada, Ottawa
Interoperability Work Group, IUGS-CGI
2 Interoperability Work Group
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Acknowledgements IUSG-CGI Interoperability Work Group
Canada: Eric Boisvert, Boyan Brodaric (GSC)
UK: Tim Duffy, John Laxton, Marcus Sen (BGS)
US: Bruce Johnson (USGS), Steve Richard (Arizona)
France: Jean-Jacques Serrano, Dominique Janjou, Christian Bellier, Francois Robida (BRGM)
Sweden: Lars Stolen, Jonas Holmberg, Thomas Lindberg (SGU)
Australia: Simon Cox (CSIRO), Bruce Simons, Alistair Ritchie (GeoScience Victoria), Ollie Raymond, Lesley Wyborn, Dale Percival (Geoscience Australia)
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Outline Web mapping approaches Levels of data interoperability Demo
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Two Approaches to Web Geology Maps Atlas (Geologic Cartographic System):
mosaic of geologic map images
GIS (Geologic Information System):
collection of geologic map data
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Option 1: web ATLAS purpose: communication content: picture, text, URL function: view only standard: data systems
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optional
optional
Option 2: web GIS purpose: science, policy content: map data function: view,
query, symbolize, download
standard: data systems, data structure, data content
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Levels of Map Data Interoperability
systems
syntax
schematic
semantic
Map System 1
scientific
systems
syntax
schematic
semantic
Map System 2
scientific
Integrated Map
Scientific Interpretation (Geologist)
Data Content (Ontology)
Data Structure (GeoSciML)
Data Language (GML)
Data Services (WMS, WFS, WCS)Atla
sG
IS
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from www.GEONgrid.org
Systems Interoperability aligning data system interfaces (web services) but: heterogeneous structure, content, interpretation
STANDARD DATA INTERFACES• to different data systems• e.g. open geospatial web services (OGC)
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GEOLOGIC AGE ROCK TYPE
but: heterogeneous data content, interpretation
from www.GEONgrid.org
Schematic Interoperability aligning heterogeneous data structures
STANDARD SCHEMA• for data transfer
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GEOLOGIC AGE ROCK TYPE
Volcanic
from www.GEONgrid.org
Semantic Interoperability aligning heterogeneous definitions for data content
Era
Eon
Period
Series
STANDARD DEFINITIONS• data content: rock types, time scale, …• data schema, metadata
but: heterogeneous interpretation at map borders
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from www.GEONgrid.org
Scientific Interoperability aligning heterogeneous scientific interpretations but: done by geologists, not computers (… for now?)
Differences in:• geometry• geohistory• description• classification
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Example of Schematic Interoperability GeoSciML Testbed 2 IUGS-CGI Interoperability Work Group (IWG) - Use open standards for system & syntax (WxS,GML) - Develop standard schema for data exchange (GeoSciML) - Demonstrate the need for semantic standards - Three use-cases: view & query, download, symbolize
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GML
Client
USGS schema
BRGM schema
GSC schema
BGS schema
SGU schema
GA schema
GeoSciML
GeoSciML
GeoSciML
GeoSciML
GeoSciML
GeoSciML
Australia
Sweden
UK
France
USA
Canada WMS WFS
WMSWFS
WMSWFS
WMSWFS
WMSWFS
WMSWFS
Example of Schematic Interoperability GeoSciML Testbed 2 • multiple viewers
• custom tools
• many databases (ESRI, Oracle,shp, …)• local data control
• standard interface• custom translator• one output data format
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Use-case 1: view map & query one object
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Use-case 2: select objects and download
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Use-case 3: symbolize by rock type, age
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Some questions for 1G: Atlas or GIS or hybrid? Level of interoperability? Leverage GeoSciML Testbed 2?
GeoSciML Testbed 2 demonstration on Friday!
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END
Demo