Title: Geospatial Standards in Action: the Australian Story
1Geospatial Standards in Action the Australian
Story
Steve Blake (Workshop Facilitator) National
Project Manager ANZLIC www.anzlic.org.au
2- WORKSHOP STRUCTURE
- Outline of the day, one year on, ASDI as context
Steve Blake - Standards for spatial data infrastructures
Andrew Jones - Interoperability standards in operation
Jonathan Doig - Geography Markup Language Simon Cox
3WORKSHOP STRUCTURE 5. Role of OGC
interoperability and web services standards in
SDI development Rob Atkinson 6. Conformance
testing Maurits van der Vlugt 7. Registry
services Lindsay Redlich 8. Open Forum
4- Aims of the Workshop
- Update on ISO TC 211, OGC and WWWC stds
- Availability of these stds within commercial
products their uptake - Recommended minimum set of stds to progress an
ASDI - Practical learnings - industry and govt experts
5- This Intro Session
- One year on from Doug Neberts visit
- ASDI Action Plan context for this workshop
- ASDI National Workshop Series outcomes
- Where are we nationally?
6Information Discovery Continuum
Information Exploitation
Global Information Discovery
WWWC Stds
Community of Practice Portals
Library Services
Search engines
ASDI
SDI
SDI
Heterogeneous
Homogeneous
Architectures
high
low
Domain knowledge
7Internet Enabling Technology
NEW DIAMOND PARADIGM
OLD LINEAR PARADIGM
Customer
Customer
Value Add
Value Add
Provider
Provider
Source
Source
8Moving Away from the Walled Garden
- Single Vendor Solution
- Custom integration with limited partners
- Difficult to integrate
- Higher risk over long term
Source OpenGIS Consortium
9Toward the Open Platform approach
- Unlimited number of services
- Easier integration with partners
- Enables easier integration of other application
services - Flexible enough to support new technologies
Source OpenGIS Consortium
10- Doug Nebert Workshop Series Oct 02
- 9 Workshops in 2 weeks
- Well received
- Slides available from ANZLIC web site
- Time to run our own standards workshop
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12Introduction to Standardisation Organisations
- Many standardisation activities exist with
different roles and responsibilities that are
relevant to SDIs - International Organisation of Standardization
(ISO TC 211, TC 204, JTC-1) - World Wide Web Consortium (W3C)
- OpenGIS Consortium (OGC)
- National Standards Organisations
13Roles of Consensus Organisations
- ISO provides general purpose standards and
specifications as guidance to implementation - Industry Consortia provide technical
implementation specifications - National/ Community groups define common
practices, content, and interaction within and
outside the group
14Geospatial Standardisation
GSDI
15Interactions
OpenGIS Consortium (OGC)
Internet Engineering Task Force (IETF)
ISO
TC 211
TC 204
World Wide Web Consortium (W3C)
JTC-1
Facilitation Bodies
- GSDI
- ANZLIC
- PCGIAP
- FGDC
- PAIGH
- INSPIRE
- GeoConnections
- CODI/UNECA
- AGI
-
National Standards Organisations
Adopter/ Implementer Community
16Standards are monolithic yet interdependent
WFS 1.0
17Community Coordination
- FGDC, Geoconnections, ANZLIC etc provide a forum
for agreement on the common adoption of a suite
of standards and practices that as a whole will
function as a Spatial Data Infrastructure
18Navigating the minefield
- Standardisation should be a least-cost means of
establishing a common means of interaction
between participants - ANZLIC is attempting to build consensus on a
requirements-based architecture (ASDI-DN) and
then specifying the context of relevant
standards, specs, and practices to ensure
consistency
19The players
OpenGIS Consortium (OGC OGC-A)
World Wide Web Consortium (W3C)
ISO
Adopter/ Implementer Community
Standards Australia
ANZLIC, ASIBA SSI
ASDI blueprint
Users
Policies, Agreements, Technologies
Coordination
20ASDI Conceptual Standards Framework
ASDI DISTRIBUTION NETWORK
WWWC STANDARDS
XML http SVG PDF, etc.
OpenGIS SPECIFICATIONS
TECHNOLOGY ENABLERS
ISO 19100 DATA STANDARDS
Metadata Encoding Classification Feature
Catalog Spatial Reference system Gazetteer Geocode
r Geoparser etc.
Directories
OGC Client Data Model OGC Catalog Services OGC
Web Map Server OGC Web Feature Server OGC Web
Coverage Server GML etc.
DATA FOCUS
21The Underlying Theme
- Store once
- Manage professionally
- Use many times
- Within an SDI framework
- this requires standards
- and standards themselves require a context
22- Proposed Priorities for the ASDI
- ASDI Governance
- Access to Data
- Data Quality
- Interoperability
- Integratability
23Advanced
Integration value-add
Access
Value Chain
View/ Portrayal
Discovery
Basic
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25Distributed Search Service
Consumer
Web service
Web Browser
Web service
Web service
Web Services RegistrySearch LodgementService
Consumer or application submits a search
Web service
Web service
Web service
Client Application
Web service
Web service
26Distributed Resource Access
COPS
COP
COP
27ASDI Distribution Network
- Seamless access to spatial data and information
services that can be accessed and used by anyone,
anywhere
28ASDI Distribution Network
- A common architecture using open systems
technologies and standards to facilitate
interoperability are being used to guide
implementation and use of the ASDI-DN
29ASDI Distribution Network
- Network of distribution services, service
providers and data storage facilities maintained
by government agencies, private sector, academia,
community organisations etc - The Internet is used as the principal delivery
mechanism for data and services - Services are provided for the discovery, viewing
and access to data
30Functional Model
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32Processing ServicesExamples of Spatial Services
- Coordinate conversion service
- Coordinate transformation service
- Web mapping service
- Orthorectification service
- Spatial subsetting service
- Feature matching service
- Route determination service
33Example Pilot Project Computational View
Bind
Find
Terrain Viewer
Annot. Viewer
Value Add
Discover
Map Viewer
Application Clients
XIMA
SLD
GML
Data Type Registry
Data Instance Registry
Service Type Registry
Service Instance Registry
Service Metadata
SensorML
SSL X.509
Registry Services
Encodings Protocols
Publish
Coverage Portrayal Service
Enhanced
Portrayal Services
Data Services
New
Source OpenGIS Consortium
34ASDI Distribution Network
- Interoperability of search and access mechanisms
is provided across multiple data distributors
regardless of the size of their data holdings - Data and services providers have the flexibility
to provide one or many views to their data, while
controlling access to their data holdings in
accordance with accepted intellectual property,
access policies and licence agreements
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36The Services Interoperability Stack
- A protocol stack
- A layered architecture of technology and
standards on which services can be implemented
and deployed - Lowest level of the stack enable connectivity of
software components by enabling them to bind,
send receive messages via publish-find-bind
mechanisms
37The Services Interoperability Stack
- Higher levels in the stack enable
interoperability and via publish-find-bind
mechanisms, allow software components to
transparently work together - Standards in the stack are all mainstream OGC,
NOIE, WWWC and ISO-endorsed stds
38ASDI DN Conceptual Model
Registor
Interoperability Stack
Find
Publish
Bind
Requestor
Provider
39NOIE Interoperability Framework
- The development of an Interoperability framework
will underpin the provision of integrated
services by articulating a set of agreed policies
and standards to allow electronic information and
transactions to operate seamlessly across
agencies and jurisdictions.
40NOIE Interoperability Framework
Source NOIE web site
41- Discussion on ASDI Action Plan
- ASDI Governance ?? ? ? ? ?
- Access to Data ?? ? ? ? ?
- Data Quality ?? ? ? ? ?
- Interoperability ?? ? ? ? ?
- Integratability ?? ? ? ? ?
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50Garbage in, garbage out!
51- Conclusions
- Aligning of NOIE E-GIF and SDI DN models
- Maturation critical mass
- Timing is good
- Our own team (arrival of OGC-A)
- Reference Implementations of an agreed ASDI
minimum stds set