Each ICAO data set should be provided together with metadata giving the geographical extent of the data set.
This requirement can be fulfilled in one of three ways:
- GeographicDescription; or
- GeographicBoundingBox; or
- BoundingPolygon.
Geographic Description
Requirement |
Reference |
DS-META-007 |
|
|
|
Element Name |
Geographical extent of the data set |
|
|
|
Obligation / Condition |
Mandatory. One of the three options must be provided. |
|
|
|
Multiplicity |
1..* |
|
|
ISO 19115 (2003) |
Number |
349 |
|
|
|
Name |
geographicIdentifier |
|
|
|
Definition |
identifier used to represent a geographic area |
|
|
|
XPath |
gmd:MD_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicDescription/gmd:MD_Identifier/gmd:code/gco:CharacterString |
|
|
|
Data type |
CharacterString |
|
|
|
Domain |
Free Text |
|
|
|
Example |
Belgium and Luxembourg |
|
|
Implementing Instructions |
|
|
- |
|
Trace to ICAO |
|
|
Not applicable |
|
Example
<gmd:MD_Metadata>
...
<gmd:identificationInfo>
<gmd:MD_DataIdentification>
<gmd:extent>
<gmd:EX_Extent>
<gmd:geographicElement>
<gmd:EX_GeographicDescription>
<gmd:geographicIdentifier>
<gmd:MD_Identifier>
<gmd:code><gco:CharacterString>Belgium and Luxembourg</gco:CharacterString></gmd:code>
</gmd:MD_Identifier>
</gmd:geographicIdentifier>
</gmd:EX_GeographicDescription>
</gmd:geographicElement>
</gmd:EX_Extent>
</gmd:extent>
</gmd:MD_DataIdentification>
</gmd:identificationInfo>
...
</gmd:MD_Metadata>
Geographic Bounding Box
Requirement |
Reference |
DS-META-007 |
|
|
|
Element Name |
Geographical extent of the data set |
|
|
|
Obligation / Condition |
Mandatory. One of the three options must be provided. |
|
|
|
Multiplicity |
1..* |
|
|
ISO 19115 |
Number |
344 |
|
|
|
Name |
westBoundLongitude |
|
|
|
Definition |
Western-most coordinate of the limit of the dataset extent, expressed in longitude in decimal degrees (positive east) |
|
|
|
XPath |
gmd:MD_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:westBoundLongitude/gco:Decimal |
|
|
|
Data type |
Decimal |
|
|
|
Domain |
-180.00 <= West Bounding Longitude Value <= 180.00 |
|
|
|
Example |
3.93 |
|
|
ISO 19115 |
Number |
345 |
|
|
|
Name |
eastBoundLongitude |
|
|
|
Definition |
Eastern-most coordinate of the limit of the dataset extent, expressed in longitude in decimal degrees (positive east) |
|
|
|
XPath |
gmd:MD_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:eastBoundLongitude/gco:Decimal |
|
|
|
Data type |
Decimal |
|
|
|
Domain |
-180.00 <= East Bounding Longitude Value <= 180.00 |
|
|
|
Example |
7.57 |
|
|
ISO 19115 |
Number |
346 |
|
|
|
Name |
southBoundLatitude |
|
|
|
Definition |
Southern-most coordinate of the limit of the dataset extent, expressed in latitude in decimal degrees (positive north) |
|
|
|
XPath |
gmd:MD_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:southBoundLatitude/gco:Decimal |
|
|
|
Data type |
Decimal |
|
|
|
Domain |
-90.00 <= South Bounding Latitude Value <= North Bounding Latitude Value |
|
|
|
Example |
52.10 |
|
|
ISO 19115 |
Number |
347 |
|
|
|
Name |
northBoundLatitude |
|
|
|
Definition |
Northern-most coordinate of the limit of the dataset extent, expressed in latitude in decimal degrees (positive north) |
|
|
|
XPath |
gmd:MD_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:northBoundLatitude/gco:Decimal |
|
|
|
Data type |
Decimal |
|
|
|
Domain |
South Bounding Latitude Value <= North Bounding Latitude Value <= 90.00 |
|
|
|
Example |
54.10 |
|
|
Implementing Instructions |
|
|
- |
|
Trace to ICAO |
|
|
Not applicable |
|
Example
<gmd:MD_Metadata>
...
<gmd:identificationInfo>
<gmd:MD_DataIdentification>
<gmd:extent>
<gmd:EX_Extent>
<gmd:geographicElement>
<gmd:EX_GeographicBoundingBox>
<gmd:westBoundLongitude><gco:Decimal>3.93</gco:Decimal></gmd:westBoundLongitude>
<gmd:eastBoundLongitude><gco:Decimal>7.57</gco:Decimal></gmd:eastBoundLongitude>
<gmd:southBoundLatitude><gco:Decimal>52.10</gco:Decimal></gmd:southBoundLatitude>
<gmd:northBoundLatitude><gco:Decimal>54.10</gco:Decimal></gmd:northBoundLatitude>
</gmd:EX_GeographicBoundingBox>
</gmd:geographicElement>
</gmd:EX_Extent>
</gmd:extent>
</gmd:MD_DataIdentification>
</gmd:identificationInfo>
...
</gmd:MD_Metadata>
BoundingPolygon
Requirement |
Reference |
DS-META-007 |
|
Element Name |
Geographical extent of the data set |
|
Obligation / Condition |
Mandatory. One of the three options must be provided. |
|
Multiplicity |
1..* |
ISO 19115 (2003) |
Number |
342 |
|
Name |
polygon |
|
Definition |
set of points defining the bounding polygon |
|
XPath |
gmd:MetaData/gmd:identificationInfo/gmd:DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_BoundingPolygon/gmd:polygon |
|
Data type |
Class |
|
Domain |
GM_Object |
|
Example |
30 30 30 40 60 40 60 30 |
Implementing Instructions |
|
- |
Trace to ICAO |
|
Not applicable |
Example
<gmd:MD_Metadata>
...
<gmd:identificationInfo>
<gmd:DataIdentification>
<gmd:extent>
<gmd:geographicElement>
<gmd:EX_BoundingPolygon>
<gmd:polygon> - various options exist for completing the polygon. Please refer to the "Guidance and Profile of GML for use with Aviation Data" [5].</gmd:polygon>
</gmd:EX_BoundingPolygon>
</gmd:geographicElement>
</gmd:extent>
</gmd:DataIdentification>
<gmd:identificationInfo>
...
</gmd:MD_Metadata>