UserGuideDataModel - Revision history

Jimg: /* Constructor Types */

2012-03-13T18:27:38Z

Constructor Types

← Older revision		Revision as of 18:27, 13 March 2012
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	===Constructor Types===		===Constructor Types===


	Constructor types, such as arrays and structures, describe the		Constructor types, such as arrays and structures, describe the
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	OPeNDAP DAP: arrays, structures, sequences, functions, and grids.		OPeNDAP DAP: arrays, structures, sequences, functions, and grids.
	The types are defined as:		The types are defined as:

	~~<blockquote>~~

	====Array====		====Array====
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	} measurement;		} measurement;
	</pre>		</pre>

	~~</blockquote>~~

	===External Data Representation===		===External Data Representation===

TomSgouros: /* Base Types */

2009-09-30T02:36:43Z

Base Types

← Older revision		Revision as of 02:36, 30 September 2009
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	*<font color='green'>Float64</font> is the IEEE 64 bit floating point data type.		*<font color='green'>Float64</font> is the IEEE 64 bit floating point data type.
	*<font color='green'>String</font> is a sequence of bytes terminated by a null character.		*<font color='green'>String</font> is a sequence of bytes terminated by a null character.
	<font color='green'>Url</font> is a string containing an OPeNDAP URL. A special <font color='green'></font> operator is defined for a URL. If the variable <font color='green'>my-url</font> is defined as a URL data type, then <font color='green'>my-url</font> indicates the string spelling out the URL, and <font color='green'>*my-url</font> indicates the data specified by the URL.		*<font color='green'>Url</font> is a string containing an OPeNDAP URL. </blockquote>
	</blockquote>

	</blockquote>		</blockquote>

TomSgouros: /* External Data Representation */

2009-09-30T02:33:28Z

External Data Representation

← Older revision		Revision as of 02:33, 30 September 2009
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	\| Byte \|\| xdr byte		\| Byte \|\| xdr byte
	\|-		\|-
	\| ~~Int32~~ \|\| xdr ~~long~~		\| Int16 \|\| xdr int16
	\|-		\|-
	\| UInt32 \|\| xdr unsigned ~~long~~		\| UInt16 \|\| xdr unsigned int16
			\|-
			\| Int32 \|\| xdr int32
			\|-
			\| UInt32 \|\| xdr unsigned int32
			\|-
			\| Float32 \|\|xdr float
	\|-		\|-
	\| Float64 \|\|xdr double		\| Float64 \|\|xdr double

TomSgouros: /* Sequence */

2009-09-30T02:20:48Z

Sequence

← Older revision		Revision as of 02:20, 30 September 2009
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	{\| border="0"		{\| border="0"
	\|-		\|-
	\| s<sub>~~0 0~~</sub> \|\| ... \|\| ~~s_{0 n}~~		\| s<sub>00</sub> \|\| s<sub>01</sub> \|\| ... \|\| s<sub>0n</sub>
	\|-		\|-
	\| s~~[1 0]~~ \|\| ... \|\| ~~s_{1 n}~~		\| s<sub>10</sub> \|\| s<sub>11</sub> \|\| ... \|\| s<sub>1n</sub>
	\|-		\|-
	\| ~~s_{2 0]~~ \|\| ... \|\| ~~s_{2 n}~~		\| s<sub>20</sub> \|\| s<sub>21</sub> \|\| ... \|\| s<sub>2n</sub>
	\|-		\|-
	\| . \|\| ... \|\| .		\| . \|\| ... \|\| ... \|\| .
	\|-		\|-
	\| . \|\| ... \|\| .		\| . \|\| ... \|\| ... \|\| .
	\|-		\|-
	\| . \|\| ... \|\| .		\| . \|\| ... \|\| ... \|\| .
	\|-		\|-
	\| ~~s_{i 0}~~ \|\| ... \|\| ~~s_{i n}~~		\| s<sub>i0</sub> \|\| s<sub>i1</sub> \|\| ... \|\| s<sub>in</sub>
	\|}		\|}

TomSgouros: /* Sequence */

2009-09-30T02:16:18Z

Sequence

← Older revision		Revision as of 02:16, 30 September 2009
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	{\| border="0"		{\| border="0"
	\|-		\|-
	\| ~~s_{~~0 0} \|\| ... \|\| s_{0 n}		\| s<sub>0 0</sub> \|\| ... \|\| s_{0 n}
	\|-		\|-
	\| ~~s_{~~1 0} \|\| ... \|\| s_{1 n}		\| s[1 0] \|\| ... \|\| s_{1 n}
	\|-		\|-
	\| s_{2 0} \|\| ... \|\| s_{2 n}		\| s_{2 0] \|\| ... \|\| s_{2 n}
	\|-		\|-
	\| . \|\| ... \|\| .		\| . \|\| ... \|\| .

TomSgouros: /* Sequence */

2009-09-30T02:13:18Z

Sequence

← Older revision		Revision as of 02:13, 30 September 2009
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	{\| border="0"		{\| border="0"
	\|-		\|-
	\| s_{0 0} \|\| . \|\| s_{0 n}		\| s_{0 0} \|\| ... \|\| s_{0 n}
	\|-		\|-
	\| . \|\| . \|\| .		\| s_{1 0} \|\| ... \|\| s_{1 n}
	\|-		\|-
	\| s_{i 0} \|\| . \|\| s_{i n}		\| s_{2 0} \|\| ... \|\| s_{2 n}
			\|-
			\| . \|\| ... \|\| .
			\|-
			\| . \|\| ... \|\| .
			\|-
			\| . \|\| ... \|\| .
			\|-
			\| s_{i 0} \|\| ... \|\| s_{i n}
	\|}		\|}

TomSgouros: /* Sequence */

2009-09-30T02:11:41Z

Sequence

← Older revision		Revision as of 02:11, 30 September 2009
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	<center>		<center>

	{\| border="3"		{\| border="0"
	\|-		\|-
	\| s_{0 0} \|\| . \|\| s_{0 n}		\| s_{0 0} \|\| . \|\| s_{0 n}
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	\|-		\|-
	\| s_{i 0} \|\| . \|\| s_{i n}		\| s_{i 0} \|\| . \|\| s_{i n}


	\|}		\|}

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	But you don't have immediate access to any of the other values in that		But you don't have immediate access to any of the other values in that
	file.		file.


	====Grid====		====Grid====

TomSgouros: /* Constructor Types */

2009-09-30T02:10:56Z

Constructor Types

← Older revision		Revision as of 02:10, 30 September 2009
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	OPeNDAP DAP: arrays, structures, sequences, functions, and grids.		OPeNDAP DAP: arrays, structures, sequences, functions, and grids.
	The types are defined as:		The types are defined as:


	<blockquote>		<blockquote>





	====Array====		====Array====
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	</blockquote>		</blockquote>


	===External Data Representation===		===External Data Representation===

TomSgouros: /* Array */

2009-09-30T02:10:09Z

Array

← Older revision		Revision as of 02:10, 30 September 2009
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	ANSI C. Multidimensional arrays are defined as arrays of arrays. An		ANSI C. Multidimensional arrays are defined as arrays of arrays. An
	array may be subsampled using subscripts or ranges of subscripts		array may be subsampled using subscripts or ranges of subscripts
	enclosed in brackets (<font color='green'>()</font>). For example,		enclosed in brackets (<font color='green'>[]</font>). For example,
	<font color='green'>temp[3][4]</font> would indicate the value in the		<font color='green'>temp[3][4]</font> would indicate the value in the
	fourth row and fifth column of the <font color='green'>temp</font>		fourth row and fifth column of the <font color='green'>temp</font>
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	Float64 data[height = 5][width = 6];		Float64 data[height = 5][width = 6];
	</pre>		</pre>


	====Structure====		====Structure====

TomSgouros: /* Base Types */

2009-09-30T02:09:36Z

Base Types

← Older revision		Revision as of 02:09, 30 September 2009
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	*<font color='green'>Float64</font> is the IEEE 64 bit floating point data type.		*<font color='green'>Float64</font> is the IEEE 64 bit floating point data type.
	*<font color='green'>String</font> is a sequence of bytes terminated by a null character.		*<font color='green'>String</font> is a sequence of bytes terminated by a null character.
	<font color='green'>Url</font> is a string containing an OPeNDAP URL~~. Please refer to ([[Wiki_Testing/OPeNDAPUserGuide2\|Section 2.1]]) for more information about these strings~~. A special <font color='green'></font> operator is defined for a URL. If the variable <font color='green'>my-url</font> is defined as a URL data type, then <font color='green'>my-url</font> indicates the string spelling out the URL, and <font color='green'>*my-url</font> indicates the data specified by the URL.		<font color='green'>Url</font> is a string containing an OPeNDAP URL. A special <font color='green'></font> operator is defined for a URL. If the variable <font color='green'>my-url</font> is defined as a URL data type, then <font color='green'>my-url</font> indicates the string spelling out the URL, and <font color='green'>*my-url</font> indicates the data specified by the URL.
	</blockquote>		</blockquote>

	</blockquote>		</blockquote>

	The declaration in a [[UserGuideOPeNDAPMessages#Data_Descriptor_Structure\|DDS]] of a		The declaration in a [[UserGuideOPeNDAPMessages#Data_Descriptor_Structure\|DDS]] of a variable of any of the base types is simply the type of the variable,
	variable of any of the base types is simply the type of the variable,
	followed by its name, and a semicolon. For example, to declare a		followed by its name, and a semicolon. For example, to declare a
	<font color='green'>month</font> variable to be a 32-bit integer, one		<font color='green'>month</font> variable to be a 32-bit integer, one