Schema Central > NIEM 3.1 > dynamicFeature.xsd > gml:DynamicFeatureCollection
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gml:DynamicFeatureCollection

A gml:DynamicFeatureCollection is a feature collection that has a gml:validTime property (i.e. is a snapshot of the feature collection) or which has a gml:history property that contains one or more gml:AbstractTimeSlices each of which contain values of the time varying properties of the feature collection.  Note that the gml:DynamicFeatureCollection may be one of the following:
1.	A feature collection which consists of static feature members (members do not change in time) but which has properties of the collection object as a whole that do change in time .  
2.	A feature collection which consists of dynamic feature members (the members are gml:DynamicFeatures) but which also has properties of the collection as a whole that vary in time.

Element information

Content

Attributes

NameOccTypeDescriptionNotes
gml:id [1..1]xsd:IDThe attribute gml:id supports provision of a handle for the XML element representing a GML Object. Its use is mandatory for all GML objects. It is of XML type ID, so is constrained to be unique in the XML document within which it occurs.from type gml:AbstractGMLType

Used in

Substitution hierarchy

Sample instance

<gml:DynamicFeatureCollection gml:id="ID">
   <gml:metaDataProperty>
      <gml:GenericMetaData>Any text, intermingled with:
         <!--any element-->
      </gml:GenericMetaData>
   </gml:metaDataProperty>
   <gml:description>string</gml:description>
   <gml:descriptionReference/>
   <gml:identifier codeSpace="http://www.example.com/">string</gml:identifier>
   <gml:name>string</gml:name>
   <gml:boundedBy>
      <gml:Envelope>
         <gml:lowerCorner>1.0 1.0</gml:lowerCorner>
         <gml:upperCorner>1.0 1.0</gml:upperCorner>
      </gml:Envelope>
   </gml:boundedBy>
   <gml:location>
      <gml:MultiGeometry gml:id="ID">
         <gml:metaDataProperty>...
         </gml:metaDataProperty>
         <gml:description>string</gml:description>
         <gml:descriptionReference/>
         <gml:identifier codeSpace="http://www.example.com/">string</gml:identifier>
         <gml:name>string</gml:name>
         <gml:geometryMember>...
         </gml:geometryMember>
         <gml:geometryMembers>...
         </gml:geometryMembers>
      </gml:MultiGeometry>
   </gml:location>
   <gml:validTime>
      <gml:TimeInstant gml:id="ID">
         <gml:metaDataProperty>...
         </gml:metaDataProperty>
         <gml:description>string</gml:description>
         <gml:descriptionReference/>
         <gml:identifier codeSpace="http://www.example.com/">string</gml:identifier>
         <gml:name>string</gml:name>
         <gml:relatedTime>...
         </gml:relatedTime>
         <gml:timePosition>12:00:00</gml:timePosition>
      </gml:TimeInstant>
   </gml:validTime>
   <gml:history>
      <gml:MovingObjectStatus gml:id="ID">
         <gml:metaDataProperty>...
         </gml:metaDataProperty>
         <gml:description>string</gml:description>
         <gml:descriptionReference/>
         <gml:identifier codeSpace="http://www.example.com/">string</gml:identifier>
         <gml:name>string</gml:name>
         <gml:validTime>...
         </gml:validTime>
         <gml:dataSource>string</gml:dataSource>
         <gml:position>...
         </gml:position>
         <gml:speed uom="">1.0</gml:speed>
         <gml:bearing>...
         </gml:bearing>
         <gml:acceleration uom="">1.0</gml:acceleration>
         <gml:elevation uom="">1.0</gml:elevation>
         <gml:status>string</gml:status>
         <gml:statusReference/>
      </gml:MovingObjectStatus>
   </gml:history>
   <gml:dataSource>string</gml:dataSource>
   <gml:dataSourceReference/>
   <gml:dynamicMembers>
      <gml:DynamicFeature gml:id="ID">
         <gml:metaDataProperty>...
         </gml:metaDataProperty>
         <gml:description>string</gml:description>
         <gml:descriptionReference/>
         <gml:identifier codeSpace="http://www.example.com/">string</gml:identifier>
         <gml:name>string</gml:name>
         <gml:boundedBy>...
         </gml:boundedBy>
         <gml:location>...
         </gml:location>
         <gml:validTime>...
         </gml:validTime>
         <gml:history>...
         </gml:history>
         <gml:dataSource>string</gml:dataSource>
         <gml:dataSourceReference/>
      </gml:DynamicFeature>
   </gml:dynamicMembers>
</gml:DynamicFeatureCollection>

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