1. Collecting Digital Content Going Forward: Lessons Learned and New Initiatives NC Geospatial Data Archiving Project (NCGDAP) North Carolina State University Libraries North Carolina Center for Geographic Information & Analysis Presented by: Steve Morris Head of Digital Library Initiatives NCSU Libraries
NDIIPP Partners Meeting
July 10, 2008

2. NC Geospatial Data Archiving Project
Partnership between university library (NCSU) and state agency (NCCGIA), started Oct. 2004
Focus on state and local geospatial content in North Carolina (state demonstration)
Tied to NC OneMap initiative, which provides for seamless access to data, metadata, and inventories
Goal: Engage spatial data infrastructure (SDI) in data preservation and archiving
Demonstration repository as catalyst for an industry conversation

3. Who?

4. State/Local agencies, State Archives
Who?
NCSU Libraries
Capture at-risk data, demonstration repository
Explore technical and organizational challenges
Catalyze discussion, generate learning experience
State/Local agencies, State Archives
Data Producers: Improved temporal data management practices
Archives: More efficient means of acquiring and preserving data; progress towards best practices

5. Cultivating a commercial market for older data.
Who: Commercial Data Producers and Vendors
Project Status
Cultivating a commercial market for older data.
Part of “permanent access” is marketing, advertising, and putting older data into the path of the user

6. What?

7. What: Traditional Geospatial Data Types
2.) Feature Extraction
Semi-automated Feature Extraction:
Uses Spatial Context, Image Texture,
Multiple layers of data, Existing GIS layers
1.) GIS-ready Image Data
County Orthorectified
Aerial Photography
Raster/Image Data
Vector Data
3.) GIS Layers
Impervious Surfaces, Landcover
Tree Type, Urban Green Space, etc
Focus on “Framework” Data Layers

8. What: Cartographic Products and Other Outputs
GIS Software
Software project file (.mxd, .apr, …)
Data layer file (.avl, .lyr, …)
PDF, GeoPDF map exports
Web Services-based representations

9. What: Place-based Data
Street Views
Oblique Imagery
3D Images
Tax Dept. Photos
Present-day value in location-based services and mobile applications
Future value for cultural heritage, descriptions of places

10. Why?

11. Suburban Development 1993/2002
Why: Solving Business Problems
Land use change analysis
Site location analysis
Real estate trends analysis
Disaster response
Resolution of legal challenges
Impervious surface maps
Suburban Development 1993/2002
Near Mecklenburg-Cabarrus County border

12. Why: Cultural Heritage and Emotional Connection
Pronounced local agency interest
in archiving, digitizing, and geo-referencing older analog products

13. When? (and How Often?)

14. When: Frequency of Capture Surveys
How often should continually changing vector datasets be captured?
Tap into data custodian understanding of production patterns and uses
Tap into local innovation
Learn about local business drivers for data archiving
Survey subjects:
2006 and 2008 surveys of NC cities and counties
2008 survey of archival practice in state agencies in NC
Planned survey of data users in NC

15. When: Frequency of Capture Surveys
2006 survey did more to socialize the problem of digital preservation within the data custodian community than any other project effort.
Four points of engagement in survey process:
Survey formulation in consultation with advisory bodies
Announcement of survey
Survey completion by data custodians/producers
Survey reports

16. Where?

17. Where: Data Archive Locations
In State
Data producers: Better temporal data management
State Archives: Selected authoritative records
Libraries: Derivatives and variants?
Out of State
GeoMAPP Project – Multi-state exchange
Participation in NDIIPP content exchanges
Role for federal government? National Map?

18. How?

19. How: Leveraging Spatial Data Infrastructure
Data inventories support content identification
Metadata standards support discoverability and use
Content standards support data interoperability over time and help eliminate semantic confusion
Data exchange networks:
Minimize need to make contact
Add technical, administrative, descriptive metadata
Establish rights and provenance

20. How: Archiving as Part of Data Community Discussion
Nov NC Geographic Information Coordinating Council (GICC) released:
Ten Recommendations in Support of Geospatial Data Sharing
Recommendation:
“Establish archive and long term data access strategies”
Suggested best practices include:
“Establish a policy and procedure for the provision of access to historic data, especially for framework data layers.”

21. How: GICC Archival and Long Term Access Committee
Initiated in response to agency requests for guidance on temporal data management
County, municipal, state, federal, and regional representation
Key focus: Best practices for data snapshots and retention

22. Moving Forward GICC Archival and Long-Term Access Committee
GeoMAPP – NDIIPP Multi-state geospatial project (NC, KY, UT)
Open Geospatial Consortium (OGC) Data Preservation Working Group
Vendor engagement

23. Thanks! Steve Morris Head, Digital Library Initiatives NCSU Libraries
NCGDAP: