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 [[ | + | 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 a 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 [[ | + | * 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 [[ | + | * 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 [[ | + | 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. | ||
[[Image:tile_type.png|center]] | [[Image:tile_type.png|center]] | ||
| − | ''Note: the [[ | + | ''Note: the [[GENIE_Gridspec|gridspec overview]] contains introductory and background information on the gridspec; more detailed information can be found in Balaji's gridspec document on the [http://www.earthsystemcurator.org/index.php?option=com_content&task=view&id=38&Itemid=74 Earth System Curator] website.'' |
Latest revision as of 15:37, 6 March 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 a 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.
- Cells may be specified implicitly using a combination of the "regular" and "uniform" properties, and a horizontal coordinate system.
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.
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.