NDIIPP Project:Collection and Preservation of At-Risk Digital Geospatial Data

Partners:

NCSU LibrariesProject Lead: Steve Morris

NC Center for Geographic Information & Analysis

Project Lead: Zsolt Nagy

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Project Context

Partnership between university library (NCSU) and state agency (NCCGIA)$520,000 fundingFocus on state and local geospatial content in North Carolina (state demonstration)Tied to NC OneMap, which provides seamless access to data, metadata, and inventory information

Note: Percentages based on the actual number of respondents to each question 3

Targeted Content

Resource TypesGIS “vector” (point/line/polygon) dataDigital orthophotography Digital mapsTabular data (e.g. assessment data)

Content ProducersMostly state, local, regional agenciesSome university, not-for-profit, commercialSelected local federal projects

Note: Percentages based on the actual number of respondents to each question 4

Vector data (scale, accuracy, currency, etc.)

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Time series – vector dataParcel Boundary Changes 2001-2004, North Raleigh, NC

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Aerial imagery (image resolution, etc.)

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Aerial imagery (image resolution, etc.)

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Aerial imagery (image resolution, etc.)

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Aerial imagery (image resolution, etc.)

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Time series – Ortho imageryVicinity of Raleigh-Durham International Airport 1993-2002

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Tabular data (combined with vector data)

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Tabular data (combined with vector data)

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Tabular data (combined with vector data)

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Earlier Acquisition Efforts

NCSU University Extension project 2000-2001

Target: County/city data in eastern NC“Digital rescue” not “digital preservation”

Project learning outcomesConfirmed concerns about long term accessNeed for efficient inventory/acquisitionWide range in rights/licensingNeed to work within statewide infrastructureAcquired experience; unanticipated collaboration

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Improving Access to Local Content and ServicesCounty and City GIS Directories

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Processing Ingested Datae.g. Testing for data gaps in county orthophoto sets

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Geographic Information Services - Trends

Map CollectionsPaper Maps

Data CollectionsCD-ROMs, File server & FTP access

Map ServersIntegrate collected data, Web-based mapping

Now: Map Portals and Streaming DataFront end to distributed, streaming data (OpenGIS)

MapCollections

DataCollections

MapServers

MapPortals

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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

Use METS as a metadata wrapperIngest FGDC metadata (crosswalk to MODS?)

Maybe METS DRM short term; GeoDRM long term

Consider PREMIS elements (extract from FGDC?)

Consider links to services; version management

Note: Percentages based on the actual number of respondents to each question 20

Partnership Building

Work within context of the NC OneMap initiativeState, 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 partnersNational States Geographic Information Council FGDC Historical Data Committee

… more

Note: Percentages based on the actual number of respondents to each question 21

Content Retention and Transfer

Ingest into DspaceLook more generically at the issue of putting geospatial content into digital repositories

Investigate re-ingest into a second platform

Start to define format migration pathsSpecial problem: geodatabases

Purse long term solutionRoles of data producing agencies, state agencies; NC OneMap; NCSU

Note: Percentages based on the actual number of respondents to each question 22

End of Project Outcomes

Components which become part of state geospatial data infrastructure

NC OneMap objectives for long term access

Start a dialog about digital preservation; create stories about digital preservation that can be told in geospatial industry venues

Components which NCSU Libraries continues for its own business reasons

High user demand for local data, historical versions

Components which are not sustainable

Note: Percentages based on the actual number of respondents to each question 23

Big Problems/Issues

Management of data versions over timeHow to “get current object/metadata/DRM” from a given data object?

Relation of the canonical metadata package to the ingest (and export) metadata package for a particular repository environment

Tailor the canonical package to the repository environment or make the acquaintance when needed?

Format migration paths (geodatabases, etc.)

Note: Percentages based on the actual number of respondents to each question 24

Big Problems/Issues (Continued)

Preserving relational databases

Role of persistent identifiers

Semantic issues (data attributes, etc.)

Viability of web services consumption as an archive development approach

Getting data sharing agreements to cover preservation use cases

Relation of DRM statement & rights for current object to older versions of object

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Find – View – GetNorth Carolina’s Digital Geospatial Data

A Comprehensive, Statewide Geographic Data Resource

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NC Local Landscape

100 Counties, 92 With GIS80 Counties with 1st Run Hi Res DB60+ Counties with Unique Map Servers.Growing Number of Municipal Systems$162 Million Plus . . .

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NC Geographic Information Coordinating Council (GICC)

General Statute32 Member Council10 Local MembersCommittees – LGC; FIC; SGUC; SMAC; TACAdministrative Agency – NC CGIA

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NC OneMap Data Survey

Contains specific questions about hardware, software, databases, projections, data distribution, metadata, and GIS “framework” data layers (frequency of update, scale, attributes, maintenance, source)For consistency purposes, modeled after the NC Floodplain Mapping GIS SurveyContains questions that address federal homeland security requirements

Note: Percentages based on the actual number of respondents to each question 40

NC OneMap Initial Data Layers Produced by Cities and Counties

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Ortho Cadastral Roads Municipal Bnd.County Bnd. ETJs Surface Waters ElevationLand Use Airports Schools UniversitiesHospitals Storm Surge Police Stations Fire StationsLandfills Watersheds Wetlands Hazardous Disposal SitesBuilding Footprints Future Land Use Water Lines Sewer Lines

Note: Percentages based on the actual number of respondents to each question 41

Better informed decisions Seamless map integration when tapping local, state, and federal data sources Enhanced statewide coordination and cost-savings Integration of data from multiple communities and jurisdictions presents new opportunities to address regional issues and problems NC OneMap is in line with The National Map initiative Statewide community of geographic data stakeholders tackles the technical and policy issues Successful intergovernmental collaboration rewards elected officials, government leaders and North Carolina citizens

Benefits of NC OneMap

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Questions?