Transcript SCO_WLIA05_WebSvcs

Web Mapping Services
Applied and Explained
No more
data silos ???
Then what ?
WLIA Annual Conference – 2005
AJ Wortley & Brenda Hemstead
State Cartographer’s Office
Overview
Say what ? – geospatial web services
 Supporting technology trends
 Benefits
 State Cartographer’s Office work
 Extensions / Opportunities
 Challenges
 Future directions
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WLIA Annual 2005
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But first, a few questions…
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How many here are data custodians ?
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How many sell data or published map
products ?
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How many have/manage a webmapping
website ?
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Where do you want to go today ?
WLIA Annual 2005
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… and my goals for this talk.
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To have a conversation about Internet
mapping services;
To avoid acronyms and technical terms;
To develop an understanding of the benefits
of this mode of publication;
And for you to come away with information
you can use.
WLIA Annual 2005
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What are webmapping services ?
… geospatial web services analogies
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Like utility lines – phone, water, gas
Always on – delivering most current info.
but only as much as you need at a time.
Stateless conversation vs. discreet
transaction
Path to a services oriented architecture
(SOA)
WLIA Annual 2005
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What is a service oriented arch. ?
Service Oriented Architecture :
A system for linking resources on demand. In an
SOA, resources are made available to other
participants in the network as independent
services that are accessed in a standardized
way. This provides for more flexible loose
coupling of resources than in traditional systems
architectures.
looselycoupled.com/glossary/
WLIA Annual 2005
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This means ? & we relate how ?
A system for linking resources on demand.
- Just-in-time (JIT) data & processing
Resources are made available to other participants
in the network …
- Internet, extranet, intranet, wireless
as independent services that are accessed in a
standardized way…
- open standards for data & exchange
This provides for more flexible loose coupling of
resources than in traditional systems architectures.
- GIT is still a traditional arch. – GIS grows up.
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GIRM: Networked
Geospatial Interoperability Stack
Source:
John D.
Evans
(GST/NASA)
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Importance of Standards and Interoperability
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A Standards-based Framework is essential to
develop a federated network of critical
infrastructure information sources.
Interoperability is required for cross-vendor,
cross platform information sharing in a
distributed environment.
Interoperability is critical to the success of
Information and Application Integration as
envisioned in all industry segments.
- OGC , 2001
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Some benefits
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Reduced overhead
Efficient, effective delivery to more
demanding users (e.g. application
developers)
Increased visibility and demand
Value added to geospatial data assets
through wider spread use.
WLIA Annual 2005
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SCO – What we do
WLIA Annual 2005
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We support building a
WI Spatial Data Infrastructure
NSDI
FGDC
-- Coordination
-- Standards
-- Policy
-- Education
The National Map
Geospatial One-Stop
-- “Topographic” content
-- Applications
-- USGS scientific datasets
-- Discovery
-- Access
-- Wide variety of content
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SDI Relies on Interoperability
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Data
– Models, metadata, management, content standards
Information
– Data evolution through documentation, transformation,
integration, translation…publication
Knowledge
– Derived from information integration and application
Understanding
– Arrived at through sound (spatial) information analysis and
good decision-making (+ Visualization/Communication)
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SDI Supports… Discovery,
Access, Evaluation, & Integration
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Discovery channels
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Portals, clearinghouses, catalogs
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Access and restrictions
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Standards and quality evaluation
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IT Integration / interoperability
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GIS Portals/Clearinghouse Context
Counties
Academia
Federal
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Data
Services
Catalog Services
Reliable Access for
Applications
Integration
Discovery Portals
User Access for Decisionmaking
States
Private
Cities
Tribes
Road Name
River Name
City Name
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SCO Efforts in support of WI SDI
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Coordinating joint efforts…
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Visual Framework Data Catalogs
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AP Catalog, OrthoFinder, ControlFinder
Clearinghouse Efforts
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IAGT Coastal Erosion Project in Ozaukee Co.
WISCLINC (WISCMAP)
Outreach & Education
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SCO & SIAC – on-line & in person
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Thematic framework data catalogs
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Aerial Photography Catalog
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Orthophotography catalog – OrthoFinder
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First legacy catalog brought on-line
Newer data, technology, metadata
Geodetic control catalog – ControlFinder
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With an eye toward interoperability and web
mapping services
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Geodetic Control Catalog
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ControlFinder
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Federal - local data
sources
Data & metadatadriven
Point attributes &
datasheet linkage/
data download
Saved result set
Historical (USGS 3rd
Order Vert.) archive
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Web services foundation
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DRG WMS reference layer.
Under development…
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All WMS reference layers.
Geodetic control as Web Feature
Service
Cascading Web Feature Services from
counties to statewide view.
WISCLINC OGC Catalog Services
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Clearinghouse efforts
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Wisconsin Land Information Clearinghouse (WISCLINC) –
Technical clearinghouse
• Repository of metadata / sites/ web services
• Inventory, catalog, discovery, access
• On-line: then & now
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Wisconsin Land Information System (WLIS) –
State agency enterprise portal by WI DNR
• Enterprise management and services system
• Portal to distributed holdings and services
• Standards, coordination, application, integration
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Clearinghouse extensions
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Clearinghouse extensions
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Browse/catalog
interface
Sites, metadata
& services
content
WMS services
viewer
Directory to
distributed
information.
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Opportunities
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Encourage interoperable standards and
protocols in statewide enterprise development
Model web services as local distribution/
contribution(publishing) method for spatial data
Extend thematic catalog model -> e.g.elevation
Repository development -> catalog services
Other services
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Gazeteer service
Local coordinate system lookup service
Historical aerial photography catalog
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Challenges – state
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Find champion – GIO ?
Fund coordination
Entice cooperation
Better access to data – timely & effective
Incentives for open data model
Adoption of interoperable standards
Develop data and information policy that facilitates federal
and regional cooperative efforts.
In contracting for data/application development, be forwardlooking with respect to architecture, protocols, and future
integration ….
WLIA Annual 2005
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Challenges – local
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Fund interoperable pilots
Develop regional use cases
Encourage use of interoperable standards
Continue to address issues of privacy, appropriate use,
chargeback policy, data security, IT capacity, CRS
Develop data and information policy that facilitates
federal and regional cooperative efforts
In contracting for data/application development, be
forward-looking with respect to architecture, protocols,
and future integration ….
WLIA Annual 2005
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Future directions
 Clearinghouse/ portal development and custodial roles
 ControlFinder WMS / WFS services
 OrthoFinder WFS linked to local WMS services
 Outreach and education (campus & state)
 State agency Center of Excellence
 Invigorate state GIS working group
Stronger participation
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Thank You – Questions ?
State Cartographer’s Office
sco.wisc.edu
AJ Wortley
[email protected]
608.265.8106
WLIA Annual 2005
2/23/2005