SpatialCoverage

Package: 
Version: 
1
Is Abstract: 
no
Is Pattern: 
no
Definition: 

A description of spatial coverage (geographic coverage) of the annotated object. Spatial coverage is described using a number of objects that support searching by a wide range of systems (geospatial coordinates, geographic classification systems, and general systems using dcterms:spatial).

Explanatory Notes: 

Different systems support different approaches to descriptions of geographic or spatial coverage. Dublin Core has a descriptive text field that is the equivalent of SpatialCoverage/description. Geographers need to understand the spatial objects available (spatialObject, highest and lowest level geography, geographic units and unit types) so they know the building blocks they have to create a map. Spatial search engines do a first pass search by a simple bounding box (the north and south latitudes and east and west longitudes that define the spatial coverage area). Spatial Coverage provides basic support for all of these uses.

Example: 
A country, a neighborhood, the inside of a polygon on the surface of the earth, along a street, at a particular intersection, or perhaps even in a certain orbit around the planet Mars. For a data set within a study this may be used to define the geographic restriction of the data set within the geographic coverage of the study (eg. The study may cover all of Sweden but the spatial coverage of the data set is Stockholm).
Synonyms: 
r:SpatialCoverage, place
Property: 
NameCardinalityDatatypeDescription
description
0..1
A textual description of the spatial coverage to support general searches.
spatialAreaCode
0..n
Supports the use of a standardized code such as ISO 3166-1, the Getty Thesaurus of Geographic Names, FIPS-5, etc.
spatialObject
0..1
Indicates the most discrete spatial object type identified for a single case. Note that data can be collected at a geographic point (address) and reported as such in a protected file, and then aggregated to a polygon for a public file.
Relationship: 
NameTarget ObjectDescriptionSource cardinalityTarget cardinalityRelationship type
hasBoundingBox
The north and south latitudes and east and west longitudes that define the spatial coverage area.
0..n
0..n
Neither
usesGeographicUnitTypeClassification
A classification which describes the geographic unit types and relationships used within this coverage.
0..n
0..n
Neither
usesGeographicUnitClassification
A classification which describes the geographic units (specific locations) and relationships used within this coverage.
0..n
0..n
Neither
includesGeographicUnitType
The geographic unit types used within this coverage.
0..n
0..n
Neither
includesGeographicUnit
The geographic units used within this coverage.
0..n
0..n
Neither
highestGeographicUnitTypeCovered
The unit type describing the highest or broadest geographic unit type that can be assembled within this coverage. In some cases with multiple hierarchies there may be multiple geographic unit types assembled.
0..n
0..n
Neither
lowestGeographicUnitTypeCovered
The lowest geographic unit type identified within this coverage. Repeat if multiple geographic hierarchies are used and there is no single lowest level that can be used to compile geographic areas into higher levels. For example a file that has one hierarchy using State-County-CensusTract/BNA and also data identified for Place which cannot be constructed directly from Census Tracts as they may cross Place boundaries.
0..n
0..n
Neither

Stage:

Is extendable: 
Is property: 
0
RDF Mapping: 
LabelTypeURI
description
skos:related
http://purl.org/dc/terms/spatial

Comments

larry's picture

added for discussion during Paris Sprint

Note that Spatial Coverage currently does not contain any relationships to objects such as Geographic Structure or Geographic Location that have not yet been created. It may need to expand as additional geographic information is available.