50 lines
2.2 KiB
Plaintext
50 lines
2.2 KiB
Plaintext
Compilation
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---
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Compiling the source code is easy. If you are running a decent linux
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installing dependencies and running make should suffic. Make sure the following
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dependencies are installed:
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- Boost 1.37+
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- kdtree++ 0.7+ (0.62 does not work with g++ 4.0+)
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- sparsehash 1.4+
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- g++ 4.4+
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- libxml2
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- scons 1.20
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- stxxl 1.2.1+
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Building the binaries is done by using scons. It should check for required
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libraries and header files and report missing ones.
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Once the dependencies are properly installed running 'scons' should build the
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binaries. The Sconstruct has been built for Ubuntu 10.04, but it should work
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under any recent Linux.
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Running the Server
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---
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Running the server requires preprocessing data from Openstreetmap. To do so you
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you need to acquire an .osm file. Beware of the world file, because you need
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serious computing power to preprocess it. Start with a smaller country. The
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preprocessing runs in three steps, all done by seperate programs.
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'extractNetwork file.osm' extracts the road network of an osm file. This is
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necessary, because the osm data is not made to support fast routing out of the
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box. The output of the step is a file called 'file.osrm'
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'createHierarchy file.osmr' preprocesses the road network and computes additional
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information that is exploited later to speed up the path computation. The output
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of this step consists of two file 'file.osrm.hsgr' and 'file.osrm.nodes'. The first
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file is the so-called hierarchy that speeds up the path computation while the
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latter one carries (among other things) geographical information.
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'routed file.osmr.hsgr file.osm.hsgr' starts the server on TCP Port 5000. The
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server communicates over http and can be queried by any browser or http-capable
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command line tool. The server responds with KML-formatted output.Assume the
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server is installed on machine localhost and a map containing the Netherlands
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has been installed. Computing a route from Amsterdam to Den Haag can be done by
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calling
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http://localhost:5000/route&52.370197&4.890444&52.048167&4.3175
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which gives a shortest (fastest) route between the two points. To locate a
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point in the map that is nearest to a given coordinate use the following call
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http://localhost:5000/locate&52.048167&4.3175
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