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

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

Who?

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

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

What?

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

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

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

Why?

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

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

When? (and How Often?)

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

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

Where?

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?

How?

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

How: Archiving as Part of Data Community Discussion Nov. 2007 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.”

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

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

Thanks! Steve Morris Head, Digital Library Initiatives NCSU Libraries Steven_Morris@ncsu.edu NCGDAP: http://www.lib.ncsu.edu/ncgdap/