DAP4 Array Representation - Revision history

Ndp: /* Option 3 */

2009-01-24T02:47:22Z

Option 3

← Older revision		Revision as of 02:47, 24 January 2009
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	</xs:complexType>		</xs:complexType>

	Although to be honest I don't think the structural semantics of the Grid data type can be completely captured by an XML schema. For example: I have no idea how to ~~enforce~~ the following concepts:		Although to be honest I don't think the structural semantics of the Grid data type can be completely captured by an XML schema. For example, I have no idea how to encode the following concepts in a schema:
	* Every dimension of a grid Array must have a corresponding Map array with of the same size.		* Every dimension of a grid Array must have a corresponding Map array with of the same size.
	* Map arrays are associated with ~~Griid~~ array dimension by document order.		* Map arrays are associated with Grid array dimension by document order.
	* Names of dimensions of grids and maps must agree.		* Names of dimensions of grids and maps must agree.

2009-01-23T22:07:20Z

Design

← Older revision		Revision as of 22:07, 23 January 2009
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	=== Design ===		=== Design ===

			[[User:Jimg\|jimg]] 14:07, 23 January 2009 (PST) See [[#Option_3]] for my pick of the proposed solutions.

	We think a better array representation for our DDX would be:		We think a better array representation for our DDX would be:

2009-01-23T22:00:48Z

Option 3

← Older revision		Revision as of 22:00, 23 January 2009
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	==== Option 3 ====		==== Option 3 ====

			[[User:Jimg\|jimg]] 14:00, 23 January 2009 (PST) I like this the best.

	Encapsulate the Maps and grid Arrays:		Encapsulate the Maps and grid Arrays:

2009-01-23T21:48:46Z

Option 3

← Older revision		Revision as of 21:48, 23 January 2009
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	* Every dimension of a grid Array must have a corresponding Map array with of the same size.		* Every dimension of a grid Array must have a corresponding Map array with of the same size.
	* Map arrays are associated with Griid array dimension by document order.		* Map arrays are associated with Griid array dimension by document order.
			* Names of dimensions of grids and maps must agree.




	[[Category:Development\|DAP3/4]] [[Category:DAP4\|DAP3/4]]		[[Category:Development\|DAP3/4]] [[Category:DAP4\|DAP3/4]]

2009-01-23T21:47:43Z

Option 3

← Older revision		Revision as of 21:47, 23 January 2009
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	</xs:complexType>		</xs:complexType>

	Although to be honest I don't think the structural semantics of the Grid data type can be completely captured by an XML schema.		Although to be honest I don't think the structural semantics of the Grid data type can be completely captured by an XML schema. For example: I have no idea how to enforce the following concepts:
			* Every dimension of a grid Array must have a corresponding Map array with of the same size.
			* Map arrays are associated with Griid array dimension by document order.



	[[Category:Development\|DAP3/4]] [[Category:DAP4\|DAP3/4]]		[[Category:Development\|DAP3/4]] [[Category:DAP4\|DAP3/4]]

2009-01-23T21:42:22Z

Option 3

← Older revision		Revision as of 21:42, 23 January 2009
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	Although to be honest I don't think the structural semantics of the Grid data type can be completely captured by an XML schema.		Although to be honest I don't think the structural semantics of the Grid data type can be completely captured by an XML schema.


			[[Category:Development\|DAP3/4]] [[Category:DAP4\|DAP3/4]]

2009-01-23T21:41:02Z

Option 3

← Older revision		Revision as of 21:41, 23 January 2009
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	</xs:complexContent>		</xs:complexContent>
	</xs:complexType>		</xs:complexType>

			Although to be honest I don't think the structural semantics of the Grid data type can be completely captured by an XML schema.

2009-01-23T21:39:34Z

Option 3

← Older revision		Revision as of 21:39, 23 January 2009
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	</Grid>		</Grid>

	A schema for this might look like:		A schema for this Grid type might look like:

			<xs:complexType name="Grid">
			<xs:complexContent>
			<xs:extension base="dap2:BaseType">
			<xs:sequence>
			<xs:element name="grids" minOccurs="1" maxOccurs="1" >
			<xs:complexType>
			<xs:choice>
			<xs:group ref="simpleArrayTypes" minOccurs="1" maxOccurs="1" />
			</xs:choice>
			</xs:complexType>
			</xs:element>
			<xs:element name="maps" minOccurs="1" maxOccurs="1" >
			<xs:complexType>
			<xs:choice>
			<xs:group ref="simpleArrayTypes" minOccurs="1" maxOccurs="unbounded" />
			</xs:choice>
			</xs:complexType>
			</xs:element>
			</xs:sequence>
			</xs:extension>
			</xs:complexContent>
			</xs:complexType>

2009-01-23T21:38:36Z

@@ Line 1: / Line 1: @@
-<dap:Float32 rdf:ID="longitude">
+Provide an improved XML representation of DAP Array objects.
-<int32 name="foo">
+In the DAP2 DDX, arrays are represented as their own type, with an embedded (and nameless) template variable. So this:
 <dimension >
-</int32>
+        <Array name="foo">
-OK, we are at the same point
+            <Int16/>