hloughrey / os-open-roads-processing

Takes the downloaded OS Open Roads data and populates a Postgres database. It then exports a postgres dump file for you to use in a new database.

OS OpenRoads Data Processing

OS Open Roads is an Open data set provided by OS. OS Open Roads provides the geometry & spatial location of all roads within the UK. This can facilitate in answer spatial questions such as: How many miles of roads are there in the country? What and where’s within 10 miles of this location? Unfortunately to make use of this data, you need to be able to convert it into a format you can use, for me, that is within a PostGIS database.

This project automates the creation of a PostGIS enabled Postgres database which is ready for you to populate with the Open Roads data via the load_road_data script.

To create you own version of the database you will need to download your own copy of OS Open Roads in the ESRI Shape format from Ordance Survey and save it into the route of this project, then run the following commands:

docker build -t <name>:<tag .
docker run --rm -d -p 5432:5432 -v ~/Desktop:/db_data --name <container name> <name>:<tag

Once you have the container running you can the exec into it and manually run the load_road_data script. This script does the following:

1. Populates the Postgres database with the OS Open Roads data;
2. Create GIST indexes using the geom column to make spatial queries faster;
3. Vacuum Analyses each table to optimise query times;
4. Creates an export of the database in Postgres custom data format *.dump file;
5. Places a copy of the dump file on a the host machines desktop;

docker exec -it <name> bash
./load_road_data