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 type of greenspace 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 greenspace-specific information.
The attribute information for the Greenspace Area feature is included below.
Polygon defining the area of the feature
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.
Attribute Name: Toid (GML), Toid (ESRI Shapefile), toid (GeoPackage), Toid (Vector tiles)
Type: CharacterString
Length: 20
Multiplicity: [1]
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.
Attribute Name: Version (GML), Version (ESRI Shapefile), version (GeoPackage), N/A (Vector tiles)
Type: Integer
Length: 3
Multiplicity: [1]
The main function of the greenspace area.
Attribute Name: primaryFunction (GML), priFunc (ESRI Shapefile), primary_function (GeoPackage), primary_function (Vector tiles)
Type: Function
Length: 40
Multiplicity: [1]
The secondary function of the greenspace area, if applicable.
Attribute Name: secondaryFunction (GML), secFunc (ESRI Shapefile), secondary_function (GeoPackage), N/A (Vector tiles)
Type: Function
Length: 40
Multiplicity: [0..1]
Type of land cover present.
Attribute Name: primaryForm (GML), priForm (ESRI Shapefile), primary_form (GeoPackage), N/A (Vector tiles)
Type: Form
Length: 20
Multiplicity: [0..1]
Secondary type of land cover present, if applicable.
Attribute Name: secondaryForm (GML), secForm (ESRI Shapefile), secondary_form (GeoPackage), N/A (Vector tiles)
Type: Form
Length: 20
Multiplicity: [0..1]
The geometry of the greenspace area.
Attribute Name: geometry
Type: GM_Surface
Multiplicity: [1]
The name of the attribute and what it is describing.
The nature of the attribute, for example a numeric value or a code list value.
The length of the attribute provided (optional).
Describes how many times this element is expected to be populated in the data. An attribute may be optional or mandatory within the product. These are denoted by:
‘1’ – there must be a value.
‘0..1’ – population is optional but a maximum of one attribute will be returned These values may be used in combination.