Directional Regions in Geographic Information Systems (GIS)

Abstract

While direction is fundamental to geography, the implementation of directional functions in Geographical Information Systems (GIS) is limited. The focus paper is the extension of direction-related concepts through the definition of directional regions, such as the area north of Washington DC. Directional regions are constructed from combinations of six elements: the feature, the reference, an orientation, a viewspan, a viewfield and a region of interest. This approach allows users to create new area features which can be incorporated in a GIS. These features are a valuable tool for geographical analysis, since they further constrain reasoning on a data set.... Geographical analysis, Geographic Information Systems (GIS).

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Document Details

Document Type
Technical Report
Publication Date
Aug 03, 1993
Accession Number
ADA268536

Entities

People

  • Douglass R. Caldwell
  • Linda H. Graff

Organizations

  • Army Geospatial Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Base Lines
  • Boundaries
  • Classification
  • Data Sets
  • Digital Elevation Models
  • Directional
  • Geographic Information Systems
  • Geography
  • Information Systems
  • Landforms
  • Language
  • Line Of Sight
  • Military Planning
  • New York
  • Orientation (Direction)
  • Pattern Recognition

Fields of Study

  • Computer science

Readers

  • Computer Vision.