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Virginia Geospatial Clearinghouse Workgroup
August 18, 2010
Spatial Data Clearinghouse
Trends and Solutions
Clive Reece
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Outline
Clearinghouse Goals
Success comes from Focus
Web Services Considerations
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If You Can’t Find It, You Can’t Use It
Data Clearinghouses Improve Access . . .
State clearinghousesdata.gov / geodata.govdata.gov.ukArcGIS.com
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Geospatial Platform Concepts
Providers Consumers
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A Geoportal Completes the Platform
Providers Consumers
Inventory Inventory and Catalogand Catalog
Access and Access and DistributionDistribution
Search and Search and DiscoveryDiscovery
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Success comes from Focus
Three examples …
9.3 Tech Transfer Sessions ESRI © 2008
6
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Oregon Spatial Data Library
• Site focuses on *downloadable* data
• Organized by framework categories
• Supports pre-packaged data or custom-order, user-specifed data packages
• http://spatialdata.oregonexplorer.info/GPT9
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Data.gov
• http://www.data.gov
• Public access to Federal, high-value data
• Supports Open Government Directive
• Initial focus on downloadable data sets
• Geoviewer adds live viewing of data - Example a
- Example b
• Streaming large data sets requires rethinking …
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Make it easy on publishers
• http://gptogc.esri.com
• Let users just enter a server endpoint URL - (don’t ask them for metadata)
DONKEY: They stink?
DONKEY: Oh, they make you cry?
DONKEY: ... You know, not everybody like onions.
“Metadata is like onions”
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Web Services
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Web Services go beyond “Data Download”
• Enables re-use of services
• Enables new applications and widgets (mashups)
• Enables better access to large data sets (e.g. imagery)
• Enables better collaboration
but we need to rethink how we architect projects …
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Example: Data.gov
• Data.gov – new initiative to transparent government
• Should Data.gov build yet another catalog for data?
• Geodata.gov and Data.gov collaborated
• Geodata.gov now supplies Data.gov with 270,000+ downloadable datasets through an OGC Catalog Web Service
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Web Services go beyond “Data Download”
• Enables re-use of services
• Enables new applications and widgets (mashups)
• Enables better access to large data sets (e.g. imagery)
• Enables better collaboration
but we need to rethink how we architect projects …
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Silo 1Silo 1
Services approach…
Data
Services
Applications
Silo 2Silo 2
Data
Services
Applications
Benefits•Enterprise awareness•Enhanced access•Reuse data•Reuse services •Reuse infrastructure
Catalog
New Applications
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Recap
• State clearinghouses are all about connecting data consumers with data providers … efficiently
• To operate effectively on the web, we need to design for connecting consumers with data provider *services*.
• Successful clearinghouses keep their efforts focused on specific business goals and making things easy for their participants.
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