: Public Note
Created: |
09/07/2015 1:22:49 PM |
Modified: |
22/11/2016 4:35:11 PM |
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Project: |
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Author: |
CHS |
Version: |
1 |
Phase: |
1 |
Status: |
Proposed |
Complexity: |
Easy |
Difficulty: |
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Priority: |
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Multiplicity: |
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Advanced: |
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UUID: |
{51A9EE55-7D1D-46bd-A1CC-4BC0EDCA2F8E} |
Appears In: |
S121 Generic Feature Types |
The defining attributes establish the type of the MLB object. These attributes are not the attributes that will normally exist in an instance of an object in a data set, but rather are used to establish the type of an object in the MLB Feature Catalogue. Certain specific types of MLB objects are predefined in the S121 standard; however, nations who implement S121 can also create additional MLB objects by instantiating the generic MLB_Location, MLB_Limit-Boundary, MLB_Zone, or MLB_Space. These custom MLB objects would be recorded in a national product specification and the defining attributes would then be carried in the data. The defining attributes are optional and are not required for the predefined subtypes of the MLB_Location, MLB_Limit-Boundary, MLB_Zone, or MLB_Space objects. Multiple values for the defining attributes may be used where needed, such as to describe an object that spans several domains. For example, the Exclusive Economic Zone EXEZNE would include the MLBJurDom attribute values, waterSurface, waterColumn, seabedSurface, and subsoil; (i.e. not including airspace).<br/>