GeoBase Standards

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GeoBase Standards
Corinna Vester Seminar on Canadian and
International Standards in Geographic Information
/ Geomatics
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Presentation overview

• The goal of this presentation is to outline
• a brief description of GeoBase,
• how GeoBase standards are developed,
• what criteria GeoBase standards must meet,
• what GeoBase standards have been adopted,
• where information on GeoBase standards and
  specifications can be found.

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GeoBase is .

• GeoBase is a federal, provincial and territorial
  government initiative, overseen by the Canadian
  Council on Geomatics (CCOG).
• This initiative was undertaken to ensure the
  provision of, and access to fundamental
  geographic information that describes the
  Canadian landmass.
• GeoBase consists of quality geospatial data,
  which is current, accurate and consistent
  throughout Canada. GeoBase is a unique data set,
  collected once and maintained - closest to
  source.

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GeoBase Relationships
GeoBase
NRCan
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GeoBase Principles

• Source data (regional and, where practical,
  national) all share the same geometry.
• GeoBase data provides national coverage.
• Source data is collected once and used by many.
• Source data is collected and maintained closest
  to source.
• The cost of maintenance and update is shared
  among the levels of government.
• All GeoBase data is available at no charge.
• GeoBase data has no restrictions on its
  subsequent use.
• GeoBase data uses a common license.

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GeoBase Data Layers
National Hydro Network (NHN)
Geopolitical Boundaries
Geographical Names of Canada
Satellite Orthoimages Landsat 7
and SPOT 4 and 5
National Road Network (NRN 2.0)
Digital Elevation Data (CDED)
Geodetic Network
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Technical Characteristics of GeoBase Data

• GeoBase data comply with a standard data model
  and meet or exceed a minimum standard for
  accuracy, resolution and currency.
• Metadata is defined and standardized at the
  entity level.
• GeoBase data and all associated tools adhere to
  international standards.

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Standards Criteria

• GeoBase standards must fit with international
  standards.
• GeoBase standards define what the standards are
  and when they must be complied with but not how
  the data is made compliant.
• GeoBase standards will be maintained.

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Standards Development and Acceptance Process - 1

• CCOG sanctions a request for a new Standard and
  identifies co-Chairs for a development team for
  the Standard.
• Co-Chairs, the data custodian and willing
  partners draft the Standard.
• The draft Standard is circulated for review and
  comment.
• Comments are reflected in draft Standard.

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Standards Development and Acceptance Process - 2

• NRCan reviews the Standard against applicable
  international standards and against other themes
  to ensure consistency. It provides advice on any
  non-conformity to the participating agencies and
  to the GeoBase Steering Committee.
• Workshops with appropriate experts (internal and
  external) are held across Canada to further
  review and modify the Standard.
• Revised draft Standard is sent to CCOG members
  for review.

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Standards Development and Acceptance Process - 3

• After a minimum two-month review period the
  Standard is tabled for a vote of CCOG.
• The Standard is accepted if 75 of CCOG members
  vote to accept it.

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Current Standards

• To date three sets of standards have been through
  the full development and acceptance process.
  These are
• National Road Network (NRN 1.0)
• National Hydrographic Network (NHN) v1.0.
• National Road Network (NRN 2.0)
• Full documentation of these standards are
  available on the GeoBase Web site
  (www.geobase.ca).

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Grandfathered Standards

• Geopolitical Boundaries,
• Geodetic Control Points,
• Landsat 7 Orthoimages,
• Digital Elevation Data, and
• Geographic Names
• The standards for these products were presented
  to the CCOG and were adopted by Resolution
  F05-11. These standards serve as the starting
  point for any future standards development for
  these themes.
• No further standards will be grandfathered. All
  future standards will follow the processes
  outlined in this document.

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Future GeoBase standards

• Land cover
• Municipal Boundaries

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Standards Maintenance Process

• Any CCOG member can identify a need for a change
  to a standard. In order to move forward with any
  change, 75 of voting CCOG members must be in
  favour.
• The process for change to a standard is the same
  as for a new standard.

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GeoBase Data Specifications

• Detailed specifications for all of the GeoBase
  data layers are documented and available on the
  GeoBase portal.
• www.geobase.ca

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Questions

• ?