Difference between revisions of "GENIE Gridspec Diagrams Tile"

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A grid tile is a contiguous area of grid cells distinct in some way from other such areas that together make up a grid [[GENIE:Gridspec:Diagrams:Mosaic|mosaic]].  For instance, a tile may represent one side of cubed sphere, or an independently [[GENIE:Gridspec:Diagrams:Discretisation|discretised]] region of an ocean grid that covers a particular body of water.  A grid tile is composed of cells, which may be specified in different ways depending on their degree or regularity or uniformity:
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A grid tile is a contiguous area of grid cells distinct in some way from other such areas that together make up a grid [[GENIE_Gridspec_Diagrams_Mosaic|mosaic]].  For instance, a tile may represent one side of cubed sphere, or an independently [[GENIE_Gridspec_Diagrams_Discretisation|discretised]] region of an ocean grid that covers a particular body of water.  A grid tile is composed of cells, which may be specified in different ways depending on their degree or regularity or uniformity:
  
* Cells may be specified explicitly using sub-types of "cell"; the only such type available currently is the [[GENIE:Gridspec:Diagrams:UnstructuredCell|unstructured cell]] type.
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* Cells may be specified explicitly using sub-types of "cell"; the only such type available currently is the [[GENIE_Gridspec_Diagrams_UnstructuredCell|unstructured cell]] type.
  
* Cells may be specified implicitly using a combination of the "regular" and "uniform" properties, and a [[GENIE:Gridspec:Diagrams:HorizontalCoordSystem|horizontal coordinate system]].
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* Cells may be specified implicitly using a combination of the "regular" and "uniform" properties, and a [[GENIE_Gridspec_Diagrams_HorizontalCoordSystem|horizontal coordinate system]].
  
Vertical levels are specified separately from the horizontal grid -- currently this is done using a [[GENIE:Gridspec:Diagrams:VerticalCoordSystem|vertical coordinate system]].
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Vertical levels are specified separately from the horizontal grid -- currently this is done using a [[GENIE_Gridspec_Diagrams_VerticalCoordSystem|vertical coordinate system]].
  
 
The projection used (if any) is specified as a sub-type of "projection", e.g. Cube_Gnomonic, Stereographic and Tripolar.
 
The projection used (if any) is specified as a sub-type of "projection", e.g. Cube_Gnomonic, Stereographic and Tripolar.

Revision as of 17:51, 26 February 2007

A grid tile is a contiguous area of grid cells distinct in some way from other such areas that together make up a grid mosaic. For instance, a tile may represent one side of cubed sphere, or an independently discretised region of an ocean grid that covers a particular body of water. A grid tile is composed of cells, which may be specified in different ways depending on their degree or regularity or uniformity:

  • Cells may be specified explicitly using sub-types of "cell"; the only such type available currently is the unstructured cell type.

Vertical levels are specified separately from the horizontal grid -- currently this is done using a vertical coordinate system.

The projection used (if any) is specified as a sub-type of "projection", e.g. Cube_Gnomonic, Stereographic and Tripolar.

Tile type.png

Note: the gridspec overview contains introductory and background information on the gridspec; more detailed information can be found in Balaji's gridspec document on the Earth System Curator website.