Geography and Spatial Information
From Government Linked Data (GLD) Working Group Wiki
Deliverables: Standard Vocabularies 2.3.5 of the GLD WG Charter addresses the use of standard vocabularies for handling geographic concepts and geospatial data.
These describe types of features, e.g. named topographic/planimetric features and points of interest.
Additional considerations include vocabularies for describing coordinate systems, datums, projections and other components of spatial reference systems. Here, efforts such as those by the EPSG can be leveraged and reused, along with standard approaches such as Well Known Text (WKT).
Types of features:
- Political and Administrative Boundaries
- and other terminologies, e.g. along lines of efforts by UK Ordinance Survey and US FGDC A-16 Framework Data Themes
Ongoing Efforts in Geographic Terminology
Notable efforts in government to develop ontologies for geographic features include:
- UK Ordinance Survey
- USGS National Map
These describe feature geometry, e.g. point/line/polygon/topology/surface and other types of entities that would typically be represented via GIS or remote sensing data structures.
- Simple Features, e.g. WGS84 lat/long
- Complex Geodata, e.g. polygonal data
- Spatial reference systems, e.g. EPSG and other designators for spatial reference systems
Action Item: support 2.3.5 - Standard Vocabularies - (optional) Geography, Spatial Information - Chris Musialek (GSA), Dave G. Smith (EPA), Todd Pehle (Orbis). Retrieved from "http://www.w3.org/2011/gld/wiki/Meetings:Telecon2011.07.07"