NDIIPP Project: North Carolina Geospatial Data Archiving Project Partners: NCSU Libraries Project Le

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NDIIPP ProjectNorth Carolina Geospatial Data
Archiving ProjectPartnersNCSU
Libraries Project Lead Steve MorrisNC Center
for Geographic Information Analysis Project
Lead Zsolt Nagy
Sept. 28, 2005
GRADE Kickoff Meeting
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Project Context

• Partnership between university library (NCSU) and
  state agency (NCCGIA)
• 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 inventory
  information
• Objective engage existing state/federal
  geospatial data infrastructures in preservation

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Targeted Content

• Resource Types
• GIS vector (point/line/polygon) data
• Digital orthophotography
• Digital maps
• Tabular data (e.g. assessment data)
• Content Producers
• Mostly state, local, regional agencies
• Some university, not-for-profit, commercial
• Selected local federal projects

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North Carolina Local GIS Landscape

• 100 counties, 92 with GIS
• 80 counties with high resolution orthophotography
• 65 counties with unique map servers.
• Growing number of municipal systems
• Value 162 million plus investment

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Local agency data vs. state/federal data
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Time series vector data Parcel Boundary Changes
2001-2004, North Raleigh, NC
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Digital orthophotography
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Digital orthophotography
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Digital orthophotography
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Time series Ortho imagery Vicinity of
Raleigh-Durham International Airport 1993-2002
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Tabular data tax parcels, land use, zoning, etc.
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Todays geospatial data as tomorrows cultural
heritage
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Risks to Digital Geospatial Data

• Producer focus on current data
• Time-versioned content generally not archives
• Future support of data formats in question
• Vast range of data formats in use--complex
• Shift to streaming data for access
• Archives have been a by-product of providing
  access
• Preservation metadata requirements
• Descriptive, administrative, technical, DRM
• Geodatabases
• Complex functionality

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Earlier NCSU Acquisition Efforts

• NCSU University Extension project 2000-2001
• Target County/city data in eastern NC
• Digital rescue not digital preservation
• Project learning outcomes
• Confirmed concerns about long term access
• Need for efficient inventory/acquisition
• Wide range in rights/licensing
• Need to work within statewide infrastructure
• Acquired experience unanticipated collaboration

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Workplan in a Nutshell

• Work from existing data inventories
• NC OneMap Data Sharing Agreements as the
  blanket, individual agreements as the quilt
• Partnership work with existing geospatial data
  infrastructures (state and federal)
• Technical approach
• METS with FGDC, PREMIS?, GeoDRM?
• Dspace now re-ingest to different environment
• Web services consumption for archival development

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Rights Issues

• Various interpretations of public records law
• 53.9 of local NC agencies charge for data
• 43.7 of local NC agencies restrict
  redistribution
• Desire for downstream control of data
• Disclaimer click-through liability concerns
• Filtered locations/individuals post 9/11 issues
• Restrictions on redistribution commercial resale
• Web services area in Wild West stage
• Both content and technical agreements
• GeoDRM initiative in the works

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Big Challenges

• Management of data versions over time
• How to get current object/metadata/DRM?
• Relation of the ideal metadata package to the
  ingest (and export) metadata package
• Tailor to repository environment or make the
  acquaintance when needed?
• Format migration paths (geodatabases, etc.)
• Preserving cartographic representation
• The counterpart to the map is not just the
  datasetalso models, symbology, interpretation,
  etc.

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Preserving Cartographic Representation
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Project Status

• Completing inventory analysis stage
• Storage system and backup deployed
• DSpace testing done, moving to production system
• Metadata workflow finalized
• Ingest workflow near finalization
• Content migration workflow near finalization
• Regional site visits planned for coming months
• Wide range of outreach/collaboration FGDC, NARA,
  EDINA, USGS, etc.
• Pilot project, georegistering digital archival
  geologic maps

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Questions?
Contact Steve Morris Head of Digital Library
Initiatives NCSU Libraries Steven_Morris_at_ncsu.edu
Phone [phone] More information http//ww
w.lib.ncsu.edu/ncgdap/
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Content Identification and Selection

• Work from NC OneMap Data Inventory
• Combine with inventory information from various
  state agencies and from previous NCSU efforts
• Develop methodology for selecting from among
  early, middle, and late stage products
• Develop criteria for time series development
• Investigate use of emerging Open Geospatial
  Consortium technologies in data identification

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Content Acquisition

• Work from NC OneMap Data Sharing Agreements as a
  starting point (the blanket)
• Secure individual agreements (the quilt)
• Investigate use of OGC technologies in capture
• Explore use of METS as a metadata wrapper
• Ingest FGDC metadata Xwalk to MODS? PREMIS?
• Maybe METS DRM short term GeoDRM long term
• Consider links to services version management
• Get the geospatial community to tackle the
  content packaging problem (maybe MPEG 21?)

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Partnership Building

• Work within context of NC OneMap initiative
• State, local, federal partnership
• State expression of the National Map
• Defined characteristic Historic and temporal
  data will be maintained and available
• Advisory Committee drawn from the NC Geographic
  Information Coordinating Council subcommittees
• Seek external partners
• National States Geographic Information Council
• FGDC Historical Data Committee
• more

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Content Retention and Transfer

• Ingest into Dspace
• Explore how geospatial content interacts with
  existing digital repository software environments
• Investigate re-ingest into a second platform
• Challenge keep the collection repository-agnostic
  
• Start to define format migration paths
• Special problem geodatabases
• Purse long term solution
• Roles of data producing agencies, state agencies
  NC OneMap NCSU

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Remote sensing data (satellite imagery)
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Geodatabase Availability

• Local agencies, especially municipalities, are
  increasingly turning to the ESRI Geodatabase
  format to manage geospatial data.
• According to the 2003 Local Government GIS Data
  Inventory, 10.0 of all county framework data and
  32.7 of all municipal framework data were
  managed in that format.

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Managing Time-versioned Content
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NC OneMap Initial Data Layers Produced by Cities
and Counties