gml:DirectedObservationAtDistance

gml:DirectedObservationAtDistance adds an additional distance property. This is the distance from the observer to the subject of the observation. Clearly this applies only to certain types of observations such as visual observations by people, or observations obtained from terrestrial cameras.

Element information

Content

• Sequence [1..1]
  from type gml:AbstractGMLType
  from group gml:StandardObjectProperties
  gml:metaDataProperty [0..*]
  gml:description [0..1]The value of this property is a text description of the object. gml:description uses gml:StringOrRefType as its content model, so it may contain a simple text string content, or carry a reference to an external description. The use of gml:description to reference an external description has been deprecated and replaced by the gml:descriptionReference property.
  gml:descriptionReference [0..1]The value of this property is a remote text description of the object. The xlink:href attribute of the gml:descriptionReference property references the external description.
  gml:identifier [0..1]Often, a special identifier is assigned to an object by the maintaining authority with the intention that it is used in references to the object For such cases, the codeSpace shall be provided. That identifier is usually unique either globally or within an application domain. gml:identifier is a pre-defined property for such identifiers.
  gml:name [0..*]The gml:name property provides a label or identifier for the object, commonly a descriptive name. An object may have several names, typically assigned by different authorities. gml:name uses the gml:CodeType content model. The authority for a name is indicated by the value of its (optional) codeSpace attribute. The name may or may not be unique, as determined by the rules of the organization responsible for the codeSpace. In common usage there will be one name per authority, so a processing application may select the name from its preferred codeSpace.
  from type gml:AbstractFeatureType
  gml:boundedBy [0..1]This property describes the minimum bounding box or rectangle that encloses the entire feature.
  Choice [0..1]
  from subst. group gml:location
  gml:location
  gml:priorityLocation
  from type gml:ObservationType
  gml:validTime [1..1]gml:validTime is a convenience property element.
  gml:using [0..1]
  Choice [0..1]
  from subst. group gml:target
  gml:target
  gml:subject
  gml:resultOf [1..1]
  from type gml:DirectedObservationType
  gml:direction [1..1]The property gml:direction is intended as a pre-defined property expressing a direction to be assigned to features defined in a GML application schema.
  1. gml:distance [1..1]

Attributes

Used in

• Type geo:FeatureType (Elements geo:Feature, geo:LocationFeature)
• Type gml:ArrayAssociationType (Element gml:members)
• Type gml:FeatureArrayPropertyType (Element gml:featureMembers)
• Type gml:FeaturePropertyType (Elements gml:featureMember, gml:featureProperty)
• Type gml:ProcedurePropertyType (Element gml:using)
• Type gml:TargetPropertyType (Elements gml:target, gml:subject)

Substitution hierarchy

• gml:AbstractObject
  • can be substituted with gml:AbstractGML
    • can be substituted with gml:AbstractFeature
      • can be substituted with gml:Observation
        • can be substituted with gml:DirectedObservation
          • can be substituted with gml:DirectedObservationAtDistance

Sample instance

<gml:DirectedObservationAtDistance 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:using>
      <gml:MultiPointCoverage 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:domainSet>...
         </gml:domainSet>
         <gml:rangeSet>...
         </gml:rangeSet>
         <gml:coverageFunction>...
         </gml:coverageFunction>
      </gml:MultiPointCoverage>
   </gml:using>
   <gml:target>
      <gml:MultiPointCoverage 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:domainSet>...
         </gml:domainSet>
         <gml:rangeSet>...
         </gml:rangeSet>
         <gml:coverageFunction>...
         </gml:coverageFunction>
      </gml:MultiPointCoverage>
   </gml:target>
   <gml:resultOf>
      <!--any element-->
   </gml:resultOf>
   <gml:direction>
      <gml:DirectionVector>
         <gml:vector>1.0 1.0</gml:vector>
      </gml:DirectionVector>
   </gml:direction>
   <gml:distance uom="">1.0</gml:distance>
</gml:DirectedObservationAtDistance>