Product supply

System requirements

OS MasterMap Topography Layer data is designed for use as a digital map within GIS and database systems.

For details of Ordnance Survey’s Licensed Partners who can incorporate OS MasterMap Topography Layer in their systems, please see the Our Partners page on the OS website.

Ordnance Survey does not recommend either suppliers or software products. The most appropriate system will depend on many factors, such as the amount of data being taken, resources available within the organisation, the existing and planned information technology infrastructure or, last but by no means least, the applications in which OS MasterMap Topography Layer is to be used.

However, as a minimum, the following elements will be required in any system:

• A means of reading the data in its native format, or translating the data into a file format, or storing the data in a database.

• A means of storing and distributing the data, perhaps in a database or through a web-based service.

• A way of visualising and querying the data, typically a GIS.

There is more information on handling OS MasterMap Topography Layer in product supply.

Available formats for the product

• GeoPackage

• Vector tiles (MBTiles)

• Geography Markup Language (GML) 2.1.2

Coverage

Coverage is Great Britain (GB).

File size

File sizes vary greatly depending on tile size and the quantity of features present in a tile:

• GeoPackage 25km² tile range: Varies (dependent on AOI selection)

• Vector tile GB Supply: Approx. 20GB

• GML 25km² tile range: Varies (dependent on AOI selection)

• GML GB Supply: Approx. 47GB

Product update schedule

OS MasterMap Topography Layer is updated every 6 weeks. Information about the current product version, and information about future and past releases, can be found on the OS MasterMap refresh dates page of the OS website.