pgRouting:提供路径分析功能的PostGIS扩展

jopen 12年前

pgRouting扩展PostGIS/ PostgreSQL地理空间数据库,提供地理信息的路由功能(路径分析)。

数据库路由方法的优点是:

  • Data and attributes can be modified by many clients, like Quantum GIS and uDig through JDBC, ODBC, or directly using Pl/pgSQL. The clients can either be PCs or mobile devices.
  • Data changes can be reflected instantaneously through the routing engine. There is no need for precalculation.
  • The “cost” parameter can be dynamically calculated through SQL and its value can come from multiple fields or tables.

核心功能

pgRouting提供以下功能:

  • 最短路径Dijkstra:routing algorithm without heuristics
  • 最短路径 A-Star: routing for large datasets (with heuristics)
  • 最短路径Shooting-Star: routing with turn restrictions (with heuristics)
  • Traveling Salesperson Problem (TSP)
  • Driving Distance calculation (Isolines)

项目主页:http://www.open-open.com/lib/view/home/1351824616447