Difference between revisions of "GENIE Gridspec Diagrams UnstructuredCell"

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m (GENIE:Gridspec:Diagrams:UnstructuredCell moved to GENIE Gridspec Diagrams UnstructuredCell)
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Unstructured cells provide detailed structural information about cells.  Unstructured cells are particularly useful for high-resolution grid [[GENIE:Gridspec:Diagrams:Tile|tiles]] that must cover detailed topography -- for instance numerically generated "unstructured triangular" [[GENIE:Gridspec:Diagrams:Discretisation|discretisations]].  Vertices are specified using an appropriate point type; currently only a geo-referenced type is available consisting of geographic longitude and latitude coordinates.
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Unstructured cells provide detailed structural information about cells.  Unstructured cells are particularly useful for high-resolution grid [[GENIE_Gridspec_Diagrams_Tile|tiles]] that must cover detailed topography -- for instance numerically generated "unstructured triangular" [[GENIE_Gridspec_Diagrams_Discretisation|discretisations]].  Vertices are specified using an appropriate point type; currently only a geo-referenced type is available consisting of geographic longitude and latitude coordinates.
  
 
''Since vertices are likely to be shared between cells, it may be more appropriate to associate vertices with a tile instead of a cell, and reference the vertices from cells instead (a similar thing is done for edges).  This will avoid storing duplicate vertex data.''
 
''Since vertices are likely to be shared between cells, it may be more appropriate to associate vertices with a tile instead of a cell, and reference the vertices from cells instead (a similar thing is done for edges).  This will avoid storing duplicate vertex data.''
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[[Image:unstructuredcell_type.png|center]]
 
[[Image:unstructuredcell_type.png|center]]
  
''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.''
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''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 17:53, 26 February 2007

Unstructured cells provide detailed structural information about cells. Unstructured cells are particularly useful for high-resolution grid tiles that must cover detailed topography -- for instance numerically generated "unstructured triangular" discretisations. Vertices are specified using an appropriate point type; currently only a geo-referenced type is available consisting of geographic longitude and latitude coordinates.

Since vertices are likely to be shared between cells, it may be more appropriate to associate vertices with a tile instead of a cell, and reference the vertices from cells instead (a similar thing is done for edges). This will avoid storing duplicate vertex data.

Unstructuredcell 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.