Geospatial Standards in Action: the Australian Story

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Geospatial Standards in Action the Australian
Story
Steve Blake (Workshop Facilitator) National
Project Manager ANZLIC www.anzlic.org.au
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• 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

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WORKSHOP 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
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• 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

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• 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?

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Information 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
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Internet Enabling Technology
NEW DIAMOND PARADIGM
OLD LINEAR PARADIGM
Customer
Customer
Value Add
Value Add
Provider
Provider
Source
Source
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Moving Away from the Walled Garden

• Single Vendor Solution
• Custom integration with limited partners
• Difficult to integrate
• Higher risk over long term

Source OpenGIS Consortium
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Toward 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
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• 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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Introduction 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

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Roles 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

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Geospatial Standardisation
GSDI
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Interactions
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
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Standards are monolithic yet interdependent
WFS 1.0
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Community 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

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Navigating 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

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The 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
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ASDI 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
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The Underlying Theme

• Store once
• Manage professionally
• Use many times
• Within an SDI framework
• this requires standards
• and standards themselves require a context

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• Proposed Priorities for the ASDI
• ASDI Governance
• Access to Data
• Data Quality
• Interoperability
• Integratability

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Advanced
Integration value-add
Access
Value Chain
View/ Portrayal
Discovery
Basic
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Distributed 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
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Distributed Resource Access
COPS
COP
COP
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ASDI Distribution Network

• Seamless access to spatial data and information
  services that can be accessed and used by anyone,
  anywhere

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ASDI 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

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ASDI 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

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Functional Model
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Processing ServicesExamples of Spatial Services

• Coordinate conversion service
• Coordinate transformation service
• Web mapping service
• Orthorectification service
• Spatial subsetting service
• Feature matching service
• Route determination service

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Example 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
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ASDI 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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The 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

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The 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

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ASDI DN Conceptual Model
Registor
Interoperability Stack
Find
Publish
Bind
Requestor
Provider
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NOIE 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.

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NOIE Interoperability Framework
Source NOIE web site
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• Discussion on ASDI Action Plan
• ASDI Governance ?? ? ? ? ?
• Access to Data ?? ? ? ? ?
• Data Quality ?? ? ? ? ?
• Interoperability ?? ? ? ? ?
• Integratability ?? ? ? ? ?

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Garbage in, garbage out!
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• 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