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Linear Referencing and Dynamic Segmentation

  • By: Aniruddha Banerjee
  • In: Encyclopedia of Geography
  • Edited by: Barney Warf
  • Subject:General Geography, Earth & Environmental Science

Dynamic segmentation is a computer-based database management system using the principles of relational algebra and topological integrity to minimize error and maximize efficiency of map analysis and display. Linear features are stored as nodes and arcs and provide only the minimum of geometric properties for proper display on maps.

When these linear features, such as roads and railways, have multiple attribute tables, dynamic segmentation is used to query and display such attributes. Examples include the number of accidents at different parts of the pavement or speed limits that differ within the same segment. Since geometric nodes and arcs are the foundation of linear features stored in a geographic information system (GIS), dynamic segmentation becomes quite useful to represent attribute data that do not sync perfectly with ...

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