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README.md

OSMI Public Transport 3

This repository contains the programme which generates the data which powers the Public Transport views of OpenStreetMap Inspector. It is called version 3 because it replaces two older (unpublished) implementations. The main difference to its predecessors is that it supports the current tagging schemes.

This software uses the Osmium library by Jochen Topf for everything related with reading OSM data and the GDAL library (via Jochen Topf's C++ wrapper gdalcpp) to write the output data.

License and Authors

This software was developed by Geofabrik GmbH. See the Git history for a full list of contributors.

This software is licensed under the terms of GNU General Public License version 3 or newer. See LICENSE.md for the full legal text of the license.

The Catch unit test framework is available under the terms of Boost Software License.

How it works

This software reads an OpenStreetMap planet dump (or one of its smaller extracts) and produces an Spatialite database which contains all errorenous objects which were found in the OpenStreetMap data. Other output formats than Spatialite are possible but not as well tested. You can open the output files using QGIS.

The SpatiaLite database is used as the data source of the WMS service by the OSMI backend. This service provides the map and an GetFeatureInfo API call used by the frontend.

Output

The documentation of the contents of the SQlite file can be found at output-documentation.md.

Dependencies

  • C++11 compiler
  • libosmium (libosmium-dev) and all its important dependencies
  • GDAL library (libgdal-dev)
  • proj.4 (libproj4-dev)
  • CMake (cmake)

You can install libosmium either using your package manager or just cloned from its Github repository to any location on your disk. Add a symlink libosmium in the top level directory of this repository to the location of libosmium/include if you use the latter variant. Take care to use libosmium v2.x not the old Osmium v1.x!

Building

mkdir build
cd build
cmake ..
make

To run the unit tests:

make test

The unit tests write temporary files to build/test/. If the tests run properly, they clean up these files. Otherwise run rm build/tests/.tmp.* manually. If a test fails because a check fails, the temporary files are clean up.

Usage

Run ./osmi_pubtrans3 -h to see the available options.

There are two binaries. osmi_pubtrans3_merc can only produce output files in Web Mercator projection (EPSG:3857) but is faster than osmi_pubtrans3 because it uses a faster coordinate transformation engine provided by libosmium while osmi_simple_views calls Proj4.

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code which powers the "new" Public Transport view of OSM Inspector

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