GENIE Gridspec Diagrams HorizontalCoordSystem - Revision history

Genie-user at 17:52, 26 February 2007

2007-02-26T17:52:29Z

Genie-user at 17:09, 26 February 2007

2007-02-26T17:09:57Z

Genie-user: GENIE:Gridspec:Diagrams:HorizontalCoordSystem moved to GENIE Gridspec Diagrams HorizontalCoordSystem

2007-02-26T16:54:00Z

GENIE:Gridspec:Diagrams:HorizontalCoordSystem moved to GENIE Gridspec Diagrams HorizontalCoordSystem

Genie-user at 12:16, 22 February 2007

2007-02-22T12:16:13Z

Genie-user at 16:16, 21 February 2007

2007-02-21T16:16:03Z

Genie-user at 16:12, 21 February 2007

2007-02-21T16:12:41Z

New page

A horizontal coordinate system provides a description of the coordinates used by a grid [[GENIE:Gridspec:Diagrams:Tile|tile]], and may include the coordinates themselves for grids that do not require data at the individual cell level (for instance regular or uniform grids). Coordinates are specified using an "axis" and are encoded in a similar way to the [http://www.unidata.ucar.edu/software/netcdf/ncml/v2.2/AnnotatedSchema.html NcML] "values" element -- either every coordinate can be listed, or a start value and offset given for periodic coordinates. "point_indices" and "edge_indices" are used in a similar way to indicate which coordinates refer to cell edges, and which to grid points.

Horizontal coordinate system "type" can currently be "polar" or "cartesian", but this is readily extensible.

[[Image:horizontal_coord_system.png|center]]

← Older revision		Revision as of 17:52, 26 February 2007
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−	A horizontal coordinate system provides a description of the horizontal coordinates used by a grid [[~~GENIE:Gridspec:Diagrams:Tile~~\|tile]], and may include the coordinates themselves for grids that do not require data at the individual cell level (for instance regular or uniform grids). Coordinates are specified using an "axis" and are encoded in a similar way to the [http://www.unidata.ucar.edu/software/netcdf/ncml/v2.2/AnnotatedSchema.html NcML] "values" element -- either every coordinate can be listed, or a start value and offset given for periodic coordinates. "point_indices" and "edge_indices" are used in a similar way to indicate which coordinates refer to cell edges, and which to grid points.	+	A horizontal coordinate system provides a description of the horizontal coordinates used by a grid [[GENIE_Gridspec_Diagrams_Tile\|tile]], and may include the coordinates themselves for grids that do not require data at the individual cell level (for instance regular or uniform grids). Coordinates are specified using an "axis" and are encoded in a similar way to the [http://www.unidata.ucar.edu/software/netcdf/ncml/v2.2/AnnotatedSchema.html NcML] "values" element -- either every coordinate can be listed, or a start value and offset given for periodic coordinates. "point_indices" and "edge_indices" are used in a similar way to indicate which coordinates refer to cell edges, and which to grid points.

	Horizontal coordinate system "type" can currently be "polar" or "cartesian", but this is readily extensible.		Horizontal coordinate system "type" can currently be "polar" or "cartesian", but this is readily extensible.

← Older revision		Revision as of 17:09, 26 February 2007
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	[[Image:horizontal_coord_system.png\|center]]		[[Image:horizontal_coord_system.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.''	+	''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.''

← Older revision		Revision as of 12:16, 22 February 2007
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	[[Image:horizontal_coord_system.png\|center]]		[[Image:horizontal_coord_system.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.''

← Older revision	Revision as of 16:54, 26 February 2007
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-A horizontal coordinate system provides a description of the coordinates used by a grid [[GENIE:Gridspec:Diagrams:Tile|tile]], and may include the coordinates themselves for grids that do not require data at the individual cell level (for instance regular or uniform grids).  Coordinates are specified using an "axis" and are encoded in a similar way to the [http://www.unidata.ucar.edu/software/netcdf/ncml/v2.2/AnnotatedSchema.html NcML] "values" element -- either every coordinate can be listed, or a start value and offset given for periodic coordinates. "point_indices" and "edge_indices" are used in a similar way to indicate which coordinates refer to cell edges, and which to grid points.
+A horizontal coordinate system provides a description of the horizontal coordinates used by a grid [[GENIE:Gridspec:Diagrams:Tile|tile]], and may include the coordinates themselves for grids that do not require data at the individual cell level (for instance regular or uniform grids).  Coordinates are specified using an "axis" and are encoded in a similar way to the [http://www.unidata.ucar.edu/software/netcdf/ncml/v2.2/AnnotatedSchema.html NcML] "values" element -- either every coordinate can be listed, or a start value and offset given for periodic coordinates. "point_indices" and "edge_indices" are used in a similar way to indicate which coordinates refer to cell edges, and which to grid points.
 Horizontal coordinate system "type" can currently be "polar" or "cartesian", but this is readily extensible.
 [[Image:horizontal_coord_system.png|center]]