North Carolina Geospatial Data Archiving Project : Cooperative Project with Library of Congress on Preservation of Digital Geospatial Data Partners: NCSU Libraries Project Lead: Steve Morris NC Center for Geographic Information

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North Carolina Geospatial Data Archiving Project
Cooperative Project with Library of Congress
on Preservation of Digital Geospatial Data
PartnersNCSU Libraries Project Lead Steve
MorrisNC Center for Geographic Information
Analysis Project Lead Zsolt Nagy
NCPMA Workshop
April 24, 2006
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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

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NDIIPP Overview

• National 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 issues
• Extensive interaction among NDIIPP projects

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Risks to Digital Geospatial Data
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Risks to Digital Geospatial Data

• Focus on current data
• Archiving data does not guarantee permanent
  access
• Future support of data formats in question
• Need to migrate formats or allow for emulation
• Data failure
• Bit rot, media failure
• Preservation metadata requirements
• Descriptive, administrative, technical, DRM
• Shift to streaming data for access

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Time series vector data Parcel Boundary Changes
2001-2004, North Raleigh, NC
Temporal data to support business needs in
Real estate analysis Land use change
analysis Economic planning
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Time series Ortho imagery Vicinity of
Raleigh-Durham International Airport 1993-2002
Even static orthophotos are at risk.
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Todays geospatial data as tomorrows cultural
heritage
Future uses of data are difficult to anticipate
(as with Sanborn Maps).
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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

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Preserving Cartographic Representation
Counterpart to the map is not just the dataset
but also models, symbolization, classification,
annotation, etc.
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Questions for You?

• What are your current practices for
• Archiving data and managing time versions
• Managing geodatabase versions
• Transfer 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?

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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

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Questions?
Contact Steve Morris Head, Digital Library
Initiatives NCSU Libraries Steven_Morris_at_ncsu.edu
Web site http//www.lib.ncsu.edu/ncgdap/