|
GraphHopper
GraphHopper is an open-source routing library and server written in Java and provides a routing API over HTTP. It runs on the server, desktop, Android, iOS or Raspberry Pi. By default OpenStreetMap data for the road network and elevation data from the Shuttle Radar Topography Mission is used. The front-end is open-source too and called GraphHopper Maps. GraphHopper can be configured to use different algorithms such as Dijkstra, A* and its bidirectional versions. To make routing fast enough for long paths (continental size) and avoid heuristical approaches GraphHopper uses contraction hierarchies by default. In the Java Magazine from Oracle, the author, Peter Karich, describes the techniques necessary to make the system memory efficient and fast. Furthermore, GraphHopper is built on a large test suite including unit, integration and load tests. The Apache License allows everyone to customize and integrate GraphHopper in free or commercial products, and together with the query ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GraphHopper Community
GraphHopper is an open-source Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use and view the source code, design documents, or content of the product. The open source model is a decentrali ... routing library and server written in Java (programming language), Java and provides a routing API over HTTP. It runs on the server, desktop, Android (operating system), Android, iOS or Raspberry Pi. By default OpenStreetMap data for the road network and elevation data from the Shuttle Radar Topography Mission is used. The front-end is open-source too and called GraphHopper Maps. GraphHopper can be configured to use different algorithms such as Dijkstra's algorithm, Dijkstra, A* search algorithm, A* and its Bidirectional search, bidirectional versions. To make routing fast enough for long paths (continental size) and avoid heuristical approaches GraphHopper uses contraction hierarchies by default. In th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |