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North Carolina Geospatial Data Archiving Project : Cooperative Project with Library of Congress on Preservation of Digital Geospatial Data
Partners:
NCSU LibrariesProject Lead: Steve Morris
NC Center for Geographic Information & AnalysisProject Lead: Zsolt Nagy
NCPMA Workshop April 24, 2006
Note: Percentages based on the actual number of respondents to each question 2
NC Geospatial Data Archiving Project(NCGDAP)
Partnership between NCSU Libraries and NC Center for Geographic Information & Analysis
Focus on state and local geospatial content in North Carolina (state demonstration)
Address NC OneMap objective: “Historic and temporal data will be maintained and available.”
One of eight projects in the first NDIIPP funding round: “Building a Network of Partners”
Engage existing spatial data infrastructure
Note: Percentages based on the actual number of respondents to each question 3
Note: Percentages based on the actual number of respondents to each question 4
NDIIPP OverviewNational Digital Information Infrastructure and Preservation Program
Congress appropriated $100 million for this effort, which instructs the Library to spend an initial $25 million to develop and execute a congressionally approved strategic plan
Eight initial projects, 2004-2007: web pages, cultural heritage, numeric data, video, business records, mixed content, geospatial (2)
Developing partnerships and identifying issuesExtensive interaction among NDIIPP projects
Note: Percentages based on the actual number of respondents to each question 5
Risks to Digital Geospatial Data
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Note: Percentages based on the actual number of respondents to each question 6
Risks to Digital Geospatial Data
Focus on current dataArchiving data does not guarantee “permanent access”
Future support of data formats in questionNeed to migrate formats or allow for emulation
Data failure“Bit rot”, media failure
Preservation metadata requirementsDescriptive, administrative, technical, DRM
Shift to “streaming data” for access
Note: Percentages based on the actual number of respondents to each question 7
Time series – vector dataParcel Boundary Changes 2001-2004, North Raleigh, NC
Temporal data to support business needs in: Real estate analysis
Land use change analysisEconomic planning
Note: Percentages based on the actual number of respondents to each question 8
Time series – Ortho imageryVicinity of Raleigh-Durham International Airport 1993-2002
Even static orthophotos are at risk.
Note: Percentages based on the actual number of respondents to each question 9
Today’s geospatial data as tomorrow’s cultural heritage
Future uses of data are difficult to anticipate (as with Sanborn Maps).
Note: Percentages based on the actual number of respondents to each question 10
Big Geoarchiving Challenges
Format migration paths
Management of data versions over time
Preservation metadata
Preserving cartographic representation
Keeping content repository-agnostic
Preserving geodatabases
Harnessing geospatial web services
More …
Note: Percentages based on the actual number of respondents to each question 11
Preserving Cartographic Representation
Counterpart to the map is not just the dataset but also models, symbolization, classification, annotation, etc.
Note: Percentages based on the actual number of respondents to each question 12
Questions for You?
What are your current practices for:Archiving data and managing time versionsManaging geodatabase versionsTransfer mechanisms for data
• to regional entities?• to off-site storage for disaster recovery?
Archiving project files and finished products
What rights issues exist with regard to putting county and city data into an archive?What would you like this project to do?
Note: Percentages based on the actual number of respondents to each question 13
Ways to Participate in NCGDAP
Identifying data for inclusion in the repository
Discussing data format strategies
Sharing ideas about archiving approaches and architectures
Sharing and identifying concerns about rights issues, liability, etc.
Host project visits to regional GIS groups
Note: Percentages based on the actual number of respondents to each question 14
Questions?
Contact:
Steve MorrisHead, Digital Library InitiativesNCSU [email protected]
Web site: http://www.lib.ncsu.edu/ncgdap/
