Theme definitions

A theme is a set of features that have been grouped together for the convenience of customers and to provide a high-level means of dividing the data in the layer logically. Features belong to only one theme.

Below are descriptions of the themes that are currently included in OS MasterMap Sites Layer and examples of functional sites that are represented within these themes. Also provided is an explanation of the features included or excluded during the capture process of an extent.

OS MasterMap Sites Layer provides seven themes:

• Air transport

• Education

• Medical care

• Rail transport

• Road transport

• Water transport

• Utility or industrial