Statistical Grid Cell - Spatial object type

Definition: Unit for dissemination or use of statistical information that is represented as a grid cell.

Description: A statistical grid cell is associated with:- the unique statistical grid cell of its upper level (if any) it is covered by,- the statistical grid cells of its lower level (if any) it covers.NB Statistical grid cells are squares.EXAMPLE In a quadtree structure, some cells are associated with the four cells they are decomposed into.

INSPIRE Data Theme: Statistical Units - [INSPIRE Data Theme Statistical Units]

INSPIRE Application schema: Statistical Units Grid - [INSPIRE Application schema Statistical Units Grid]

Subtype of: Statistical Unit


Attributes

Definition: A cell code.

Description: This code is composed of:1. A coordinate reference system part, represented by the word CRS, followed by the EPSG code.2. A resolution and position part:- If the coordinate reference system is projected, the word RES followed by the grid resolution in meters and the letter m. Then, the letter N followed by the northing value in meters, and the letter E followed by the easting value in meters too.- If the coordinate reference system is not projected, the word RES followed by the grid resolution in degree-minute-second, followed by the word dms. Then the word LON followed by the longitude value in degree-minute-second, and word LAT followed by the latitude value in degree-minute-second.For both cases, the given position is the position of the lower left cell corner.NOTE: This code acts like an identifier.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString

Definition: The grid cell lower left corner geographical position.

Multiplicity: 1

Stereotypes: voidable

Valuetype: DirectPosition

Definition: The grid cell position within the grid based on the grid coordinates.

Multiplicity: 0...1

Stereotypes: voidable

Valuetype: GridPosition

Definition: The grid cell geometry.

Multiplicity: 1

Stereotypes: voidable

Valuetype: GM_Polygon


Constraints

Type Invariant

Status Approved

Note /*The code shall be composed of:(1) A coordinate reference system part, represented by the word CRS, followed by the EPSG code.(2) A resolution and position part:– If the coordinate reference system is projected, the word RES followed by the grid resolution in meters and the letter m. Then, the letter N followed by the northing value in meters, and the letter E followed by the easting value in meters.– If the coordinate reference system is not projected, the word RES followed by the grid resolution in degree-minute-second, followed by the word dms. Then the word LON followed by the longitude value in degree-minute-second, and word LAT followed by the latitude value in degree-minute-second.For both cases, the given position shall be the position of the lower left cell corner.*/

Type Invariant

Status Approved

Note /* The cell position should be within the grid, according to its width and height */

Type Invariant

Status Approved

Note /* At least one of the attributes code, geographicalPosition, gridPosition or geometry shall be provided */

Type Invariant

Status Approved

Note /* Where several spatial representations are provided (code, geographicalPosition, gridPosition and geometry), they shall be consistent */


Associated objects - Mandatory

Definition: A grid composed of statistical cells.

Description: Such grid is associated with an upper grid, that has a bigger resolution, and a lower grid that has a lower resolution. Some statistical grids are organised into a hierarchy of grids with different resolutions. The cells composing two linked grids have to satisfy some topological constraints: each cell of the upper grid should be the aggregation of cells of the lower grid.EXAMPLE The hierarchical structure is a quadtree if the grids are composed of quadrilateral cells and each cell is composed of less than four cells of the lower level.

Multiplicity: 1

Name of the association: grid

Association definition: The grid made up of cells.

INSPIRE Data Theme: Statistical Units - [INSPIRE Data Theme Statistical Units]

INSPIRE Application schema: Statistical Units Grid - [INSPIRE Application schema Statistical Units Grid]


Attributes

Definition: The position of the origin point of the grid in the specified coordinate reference system (if defined).

Description: The origin point is the lower left grid point.

Multiplicity: 0...1

Valuetype: DirectPosition

Definition: The grid width, in cell number (if defined).

Multiplicity: 0...1

Valuetype: Integer

Definition: The grid height, in cell number (if defined).

Multiplicity: 0...1

Valuetype: Integer

Definition: External object identifier of the spatial object.

Description: An external object identifier is a unique object identifier published by the responsible body, which may be used by external applications to reference the spatial object. The identifier is an identifier of the spatial object, not an identifier of the real-world phenomenon.

Multiplicity: 1

Valuetype: Identifier

Definition: The EPSG code to identify the grid Coordinate Referencing System.

Description: This information is relevant only if all cells of the grid have the same CRS.

Multiplicity: 0...1

Valuetype: Integer

Definition: The grid resolution.

Description: This information is relevant only if all cells of the grid have the same resolution.

Multiplicity: 0...1

Valuetype: StatisticalGridResolution


Constraints

Type Invariant

Status Approved

Note /* If the coordinate reference system is a projected one, the resolution shall be a length. Otherwise, it shall be an angle. */


Associated objects - Optional

Definition: A grid composed of statistical cells.

Description: Such grid is associated with an upper grid, that has a bigger resolution, and a lower grid that has a lower resolution. Some statistical grids are organised into a hierarchy of grids with different resolutions. The cells composing two linked grids have to satisfy some topological constraints: each cell of the upper grid should be the aggregation of cells of the lower grid.EXAMPLE The hierarchical structure is a quadtree if the grids are composed of quadrilateral cells and each cell is composed of less than four cells of the lower level.

Multiplicity: 0..1

Name of the association: upper

Association definition: The immediately upper statistical grid.

INSPIRE Data Theme: Statistical Units - [INSPIRE Data Theme Statistical Units]

INSPIRE Application schema: Statistical Units Grid - [INSPIRE Application schema Statistical Units Grid]


Attributes

Definition: The position of the origin point of the grid in the specified coordinate reference system (if defined).

Description: The origin point is the lower left grid point.

Multiplicity: 0...1

Valuetype: DirectPosition

Definition: The grid width, in cell number (if defined).

Multiplicity: 0...1

Valuetype: Integer

Definition: The grid height, in cell number (if defined).

Multiplicity: 0...1

Valuetype: Integer

Definition: External object identifier of the spatial object.

Description: An external object identifier is a unique object identifier published by the responsible body, which may be used by external applications to reference the spatial object. The identifier is an identifier of the spatial object, not an identifier of the real-world phenomenon.

Multiplicity: 1

Valuetype: Identifier

Definition: The EPSG code to identify the grid Coordinate Referencing System.

Description: This information is relevant only if all cells of the grid have the same CRS.

Multiplicity: 0...1

Valuetype: Integer

Definition: The grid resolution.

Description: This information is relevant only if all cells of the grid have the same resolution.

Multiplicity: 0...1

Valuetype: StatisticalGridResolution


Associated objects - Optional

Definition: Unit for dissemination or use of statistical information that is represented as a grid cell.

Description: A statistical grid cell is associated with:- the unique statistical grid cell of its upper level (if any) it is covered by,- the statistical grid cells of its lower level (if any) it covers.NB Statistical grid cells are squares.EXAMPLE In a quadtree structure, some cells are associated with the four cells they are decomposed into.

Multiplicity: 0..1

Name of the association: upper

Association definition: The immediately upper statistical grid cell.

INSPIRE Data Theme: Statistical Units - [INSPIRE Data Theme Statistical Units]

INSPIRE Application schema: Statistical Units Grid - [INSPIRE Application schema Statistical Units Grid]

Subtype of: StatisticalUnit


Attributes

Definition: A cell code.

Description: This code is composed of:1. A coordinate reference system part, represented by the word CRS, followed by the EPSG code.2. A resolution and position part:- If the coordinate reference system is projected, the word RES followed by the grid resolution in meters and the letter m. Then, the letter N followed by the northing value in meters, and the letter E followed by the easting value in meters too.- If the coordinate reference system is not projected, the word RES followed by the grid resolution in degree-minute-second, followed by the word dms. Then the word LON followed by the longitude value in degree-minute-second, and word LAT followed by the latitude value in degree-minute-second.For both cases, the given position is the position of the lower left cell corner.NOTE: This code acts like an identifier.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString

Definition: The grid cell lower left corner geographical position.

Multiplicity: 1

Stereotypes: voidable

Valuetype: DirectPosition

Definition: The grid cell position within the grid based on the grid coordinates.

Multiplicity: 0...1

Stereotypes: voidable

Valuetype: GridPosition

Definition: The grid cell geometry.

Multiplicity: 1

Stereotypes: voidable

Valuetype: GM_Polygon


Constraints

Type Invariant

Status Approved

Note /*The code shall be composed of:(1) A coordinate reference system part, represented by the word CRS, followed by the EPSG code.(2) A resolution and position part:– If the coordinate reference system is projected, the word RES followed by the grid resolution in meters and the letter m. Then, the letter N followed by the northing value in meters, and the letter E followed by the easting value in meters.– If the coordinate reference system is not projected, the word RES followed by the grid resolution in degree-minute-second, followed by the word dms. Then the word LON followed by the longitude value in degree-minute-second, and word LAT followed by the latitude value in degree-minute-second.For both cases, the given position shall be the position of the lower left cell corner.*/

Type Invariant

Status Approved

Note /* The cell position should be within the grid, according to its width and height */

Type Invariant

Status Approved

Note /* At least one of the attributes code, geographicalPosition, gridPosition or geometry shall be provided */

Type Invariant

Status Approved

Note /* Where several spatial representations are provided (code, geographicalPosition, gridPosition and geometry), they shall be consistent */


Associated objects - Mandatory

Definition: A grid composed of statistical cells.

Description: Such grid is associated with an upper grid, that has a bigger resolution, and a lower grid that has a lower resolution. Some statistical grids are organised into a hierarchy of grids with different resolutions. The cells composing two linked grids have to satisfy some topological constraints: each cell of the upper grid should be the aggregation of cells of the lower grid.EXAMPLE The hierarchical structure is a quadtree if the grids are composed of quadrilateral cells and each cell is composed of less than four cells of the lower level.

Multiplicity: 1

Name of the association: grid

Association definition: The grid made up of cells.

INSPIRE Data Theme: Statistical Units - [INSPIRE Data Theme Statistical Units]

INSPIRE Application schema: Statistical Units Grid - [INSPIRE Application schema Statistical Units Grid]


Attributes

Definition: The position of the origin point of the grid in the specified coordinate reference system (if defined).

Description: The origin point is the lower left grid point.

Multiplicity: 0...1

Valuetype: DirectPosition

Definition: The grid width, in cell number (if defined).

Multiplicity: 0...1

Valuetype: Integer

Definition: The grid height, in cell number (if defined).

Multiplicity: 0...1

Valuetype: Integer

Definition: External object identifier of the spatial object.

Description: An external object identifier is a unique object identifier published by the responsible body, which may be used by external applications to reference the spatial object. The identifier is an identifier of the spatial object, not an identifier of the real-world phenomenon.

Multiplicity: 1

Valuetype: Identifier

Definition: The EPSG code to identify the grid Coordinate Referencing System.

Description: This information is relevant only if all cells of the grid have the same CRS.

Multiplicity: 0...1

Valuetype: Integer

Definition: The grid resolution.

Description: This information is relevant only if all cells of the grid have the same resolution.

Multiplicity: 0...1

Valuetype: StatisticalGridResolution


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