Geospatial Metadata for the Harvard Geospatial Library HGL

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Geospatial Metadata for the Harvard Geospatial
Library (HGL)

• Marc McGeeGeospatial Resources
  CatalogerHarvard College Library

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GeospatialMetadata
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What is GIS?

• Acronym for geographic information system. An
  integrated collection of computer software and
  data used to view and manage information about
  geographic places, analyze spatial relationships,
  and model spatial processes. A GIS provides a
  framework for gathering and organizing spatial
  data and related information so that it can be
  displayed and analyzed.
  ESRI GIS Dictionary

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What is HGL?Harvard Geospatial Library

• http//hgl.harvard.edu
• Catalog and repository of geospatial data
• Data discovery
• Data display
• Data download
• Online mapping service
• Simple visualization

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Geospatial Data Vector, Raster, Attributes
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Metadata Standards

• Federal Geographic Data Committee Content
  Standard for Digital Geospatial Metadata (FGDC
  CSDGM) Version 2.0, 1998
• ISO Geographic Information Metadata191152003
  / 19139
• Open GIS Consortium (OGC) ISO version
• MARC21
• Dublin Core
• MODS

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FGDC CSDGM Elements

• Main sections
• Identification
• citation (title, originator, date, pub. info,
  URL), abstract, purpose, currentness reference,
  status, spatial domain, theme and geography
  keywords, access/use constraints
• Data Quality
• attribute accuracy, data completeness, logical
  consistency, positional accuracy, source
  information, process steps
• Spatial Data Organization
• vector/raster, feature count, row/column count
• Spatial Reference
• coordinate system, projection, datum
• Entity and Attribute
• features, attributes, attribute values

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FGDC CSDGM Elements

• Main sections (cont.)
• Distribution
• distributor, liability, how to obtain (format,
  location, fees?)
• Metadata Reference
• date, contact (cataloger?), version of CSDGM,
  review date?
• Sub-sections
• Citation (e.g. identification, sources)
• Time Period (e.g. data set publication, sources,
  process steps)
• Contact (e.g. data set contact, process steps,
  metadata creator)

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FGDC CSDGM StandardProduction Rules
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FGDC CSDGM Standard Element definitions and
domains
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FGDC CSDGM WorkbookGraphical Representation
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Metadata Creation Process

• Metadata gathering
• Original source (packaging, files)
• Data producer (Web site, direct contact)
• Clearinghouses (e.g. NSDI)
• Codebooks for attribute definitions
• Local processing (imaging, HGL file format)
• Creation/application of dataset template
• Layer-level description using local standards
• e.g. title, abstract, access, keyword thesauri

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Metadata Cataloging Tools ESRI ArcCatalog FGDC
Editor
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FGDC Metadata and MARC21

• Crosswalk FGDC to MARC21, MARC21 to FGDC
• MARCEdit Terry Reese (Oregon State University)
• MARC Geospatial Data Fields
• 034/255 scale, bounding coordinates
• 342 Geospatial Reference
• 343 Planar Coordinate Data
• 352 Digital Graphic Representation
• 514 Data Quality Note
• 552 Entity/Attribute Information Note
• Challenges in coordinated content formatting

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Challenges/Opportunities

• Dealing with 8
• Balancing efficiency, utility, and compliance
  with standards
• Developing more/better metadata automation tools
• Data producers as catalogers
• Interoperability with other systems/standards
• Searching and being searched
• GIS/Library community collaboration
• Central catalog/utility

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Further Information

• Harvard Geospatial Library http//hgl.harvard.edu
  
• FGDC Content Standard Web sitehttp//www.fgdc.gov
  /metadata
• GIS_at_Harvard Web siteCenter for Geographic
  Analysis (CGA) http//www.gis.harvard.edu
• Harvard Map Collection GIS tutorial
  http//hcl.harvard.edu/libraries/maps/gis/tutorial
  s.html
• Marc McGee
• x 4-7173
• mmcgee_at_fas.harvard.edu