Product details

Feature types

OS MasterMap Greenspace Layer contains one feature type: GreenspaceArea

OS MasterMap Greenspace Layer is comprised of a subset of the TopographicArea polygons from OS MasterMap Topography Layer (which represent topographic objects that have a polygon-based

geometry). Only polygons which have been classified as a form of green space will be supplied. This subset of polygons will have the Topographic Identifier (TOID) and version number from OS MasterMap Topography Layer (to enable the datasets to be used in conjunction) plus additional attributes providing the green space-specific information.

OS MasterMap Greenspace Layer data showing detailed polygons overlaid on OS MasterMap Topography Layer

Attributes

TOID

The unique reference number of the feature in OS MasterMap Topography Layer. Combined with the version number, this enables joins with the Topography Layer dataset.

Version

The version number of the feature in OS MasterMap Topography Layer. This identifies the specific version of Topography Layer feature this dataset was created from. Combined with the TOID, this enables joins with the Topography Layer dataset.

Primary function

The main function of the green space area. Functions are determined from a specific green space list, and for features within this dataset can be found below.

Secondary function

Where a polygon has more than one green space function present, this field will be populated with the second function. These functions come from the same list as the Primary Functions. The order of the Primary and Secondary Functions is predetermined by a hierarchy (shown later in this guide) and does not indicate an order of importance or scale.

Primary form

The main form of the green space area. Forms are determined from a specific green space list. A list of the possible forms for features within this dataset can be found later in this section.

Secondary form

Where a polygon has more than one green space form present, this field will be populated with the second form. These forms come from the same list as the Primary Forms. The order of the Primary and Secondary Forms is predetermined by a hierarchy (shown later in this guide) and does not indicate an order of importance or scale.

OS Open Greenspace lookup table

OS Open Greenspace is part of Ordnance Survey’s Open Data portfolio and depicts the location and extent of exercise and recreation facilities likely to be open to the public. This Open Data product was designed alongside OS MasterMap Greenspace Layer, and it is intended that the two products can be used together easily.

A lookup table exists to form a link between the two products and is provided in the full Great Britain (GB) supply of OS MasterMap Greenspace Layer. Further information can be found in the technical specification.