.. versionadded:: 3.10
.. shortname:: XODR
.. build_dependencies:: libOpenDRIVE >= 0.5.0, GEOS
This driver provides read access to road network elements of OpenDRIVE datasets.
OpenDRIVE is an open industry format for lane-detailed description of road networks, commonly used in applications of the automotive and transportation systems domains. It bundles polynomial, continuous road geometry modelling with all necessary topological links and semantic information from traffic-regulating infrastructure (signs and traffic lights).
.. supports_georeferencing::
The currently supported OpenDRIVE version is 1.4 and depends on what is provided by libOpenDRIVE.
The XODR driver exposes OpenDRIVE's different road elements as separate layers by converting geometric elements into 3-dimensional OGR geometry types. The following layer types are currently implemented:
- ReferenceLine: Road reference line (
<planView>
) as :cpp:class:`OGRLineString`. - LaneBorder: Outer road lane border as :cpp:class:`OGRLineString`.
- Lane: Polygonal surface (TIN) of the lane mesh as :cpp:class:`OGRTriangulatedSurface`.
- RoadMark: Polygonal surface (TIN) of the road mark mesh as :cpp:class:`OGRTriangulatedSurface`.
- RoadObject: Polygonal surface (TIN) of the road object mesh as :cpp:class:`OGRTriangulatedSurface`.
- RoadSignal: Polygonal surface (TIN) of the road signal mesh as :cpp:class:`OGRTriangulatedSurface`.
By definition, OpenDRIVE geometries are always referenced in a Cartesian coordinate system which defaults to having its origin at (0, 0, 0)
. If real-world coordinates are used, the OpenDRIVE header provides a PROJ.4 string with the definition of a projected spatial reference system:
<header ...> <geoReference><![CDATA[+proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=500000 +y_0=0 +datum=WGS84 +units=m +no_defs]]></geoReference> </header>
The XODR driver uses this PROJ definition as spatial reference for creation of all OGR geometry layers.
The supported content encoding of OpenDRIVE XML files is limited to what pugixml is able to automatically guess (see 4.6. Encodings). The default fallback encoding is UTF-8.
The following open options can be specified
(typically with the -oo name=value
parameters of :program:`ogrinfo` or :program:`ogr2ogr`):
.. oo:: EPSILON :choices: <float> :default: 1.0 Epsilon value ``> 0.0`` for linear approximation of continuous OpenDRIVE geometries. A smaller value results in a finer sampling. This parameter corresponds to libOpenDRIVE's ``eps`` parameter.
.. oo:: DISSOLVE_TIN :choices: YES, NO :default: NO Whether to dissolve triangulated surfaces. By setting this option to YES, the TIN layers *Lane* and *RoadMark* of geometry type :cpp:class:`OGRTriangulatedSurface` will be simplified to single, simple :cpp:class:`OGRPolygon` geometries. This performs a :cpp:func:`UnaryUnion` which dissolves boundaries of all touching triangle patches and thus yields a slimmer dataset which often suffices for basic GIS usage. Be aware that this dissolving step increases processing time significantly. Layer *RoadSignal* will be dissolved to a simple :cpp:class:`OGRPoint`.
Translate OpenDRIVE road ReferenceLine elements (
<planView>
) to :ref:`Shapefile <vector.shapefile>` using :program:`ogr2ogr`. The desired :ref:`layer type <layer types>` which is to be extracted from the dataset is specified as the last parameter of the function call.ogr2ogr -f "ESRI Shapefile" CulDeSac.shp CulDeSac.xodr ReferenceLine
Convert the whole OpenDRIVE dataset with all its different layers into a :ref:`GeoPackage <vector.gpkg>` using:
ogr2ogr -f "GPKG" CulDeSac.gpkg CulDeSac.xodr
Convert the whole OpenDRIVE dataset with custom parameters :oo:`EPSILON` and :oo:`DISSOLVE_TIN` into a :ref:`GeoPackage <vector.gpkg>`:
ogr2ogr -f "GPKG" CulDeSac.gpkg CulDeSac.xodr -oo EPSILON=0.9 -oo DISSOLVE_TIN=YES
To use the XODR driver through a docker image, first build the image from the corresponding docker directory
cd <gdal>/docker/ubuntu-full/ docker build -t gdal/xodr -f Dockerfile .
For general usage information refer to GDAL Docker images. Usage examples:
Use :program:`ogrinfo` to extract detailed information about a local xodr file by mounting your current working directory ($PWD) containing the file into the Docker container:
docker run --rm -v ${PWD}:/home -it gdal/xodr ogrinfo /home/<file>.xodr
Use :program:`ogr2ogr` to convert a local xodr file into any other supported OGR output format. The result will be automatically available in your host machine's working directory which is mounted into the container:
docker run --rm -v ${PWD}:/home -it gdal/xodr ogr2ogr -f "GPKG" /home/<file>.gpkg /home/<file>.xodr
Alternatively, you can run a docker container that enables using the XODR driver in an isolated workspace from within the container
docker run --name <container_name> -it gdal/xodr /bin/bash
Building of the driver as plugin is tested to work on
- Ubuntu 24.04 using GCC
- Windows 10 using GCC 13.1.0 (with MCF threads) + MinGW-w64 11.0.0 (MSVCRT runtime), which is obtainable from WinLibs.
Ensure to meet the following driver dependencies:
- PROJ
- GEOS
- libOpenDRIVE as shared library (built with CMake option
-DBUILD_SHARED_LIBS=ON
)
Then, after checking out GDAL sources with this driver extension, create the build directory:
cd <gdal> mkdir build cd build
From the build directory configure CMake to activate our XODR driver as plugin:
cmake .. -DOGR_ENABLE_DRIVER_XODR_PLUGIN=TRUE -DOpenDrive_DIR=/path/to/libOpenDRIVE/installdir/cmake/
Note
The :file:`cmake/` path is usually automatically created when installing libOpenDRIVE and contains the necessary configuration files for inclusion into other project builds.
Now, build GDAL and install it:
cmake --build . cmake --build . --target install
Afterwards you will find a new shared library file :file:`{path/to/GDAL/installdir}/lib/gdalplugins/ogr_XODR`.
Check if XODR driver is found:
cd <gdal>/build/ ./apps/ogrinfo --format XODR
This should print basic capabilities of the driver:
Format Details: Short Name: XODR Long Name: OpenDRIVE - Open Dynamic Road Information for Vehicle Environment Supports: Vector Supports: Open() - Open existing dataset. <OpenOptionList> ... </OpenOptionList>
If you are on Linux, depending on your environment, you might experience linker errors like:
ERROR 1: libOpenDrive.so: cannot open shared object file: No such file or directory
In such cases ensure that your environment variable LD_LIBRARY_PATH
points to the corresponding install directories of libOpenDRIVE and GDAL and run ldconfig
afterwards.