resultOf DirectedObservation Observation schema

Copyright © 2007 Open Geospatial Consortium, Inc. All Rights Reserved. 197 gml:CompositeValue gml:valueComponents Temperature uom=urn:x-si:v1999:uom:degreesCtemplateTemperature Pressure uom=urn:x-si:v1999:uom:kPatemplatePressure gml:valueComponents gml:CompositeValue gml:rangeParameters gml:tupleList3,101.2gml:tupleList gml:DataBlock

18.2.6 DirectedObservation

A gml:DirectedObservation is the same as an observation except that it adds an additional gml:direction property. This is the direction in which the observation was acquired. Clearly this applies only to certain types of observation such as visual observations by people, or observations obtained from terrestrial cameras. element name=DirectedObservation type=gml:DirectedObservationType substitutionGroup=gml:Observation complexType name=DirectedObservationType complexContent extension base=gml:ObservationType sequence element ref=gml:direction sequence extension complexContent complexType 198 Copyright © 2007 Open Geospatial Consortium, Inc. All Rights Reserved. EXAMPLE: gml:DirectedObservation gml:validTime gml:TimeInstant gml:timePosition2002-11-12T09:12:00gml:timePosition gml:TimeInstant gml:validTime gml:using xlink:href=http:www.my.orgcamerasleica2 gml:target xlink:href=http:www.tourist.orgsightsmountain3 gml:resultOf xlink:href=http:www.my.orgphotoslandscape1.jpg gml:direction gml:DirectionVector gml:vector srsName=urn:x-ogc:def:crs:EPSG:6.3:43260.0 45.0gml:vector gml:DirectionVector gml:direction gml:DirectedObservation

18.2.7 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 observation such as visual observations by people, or observations obtained from terrestrial cameras. element name=DirectedObservationAtDistance type=gml:DirectedObservationAtDistanceType substitutionGroup=gml:DirectedObservation complexType name=DirectedObservationAtDistanceType complexContent extension base=gml:DirectedObservationType sequence element name=distance type=gml:MeasureType sequence extension complexContent complexType EXAMPLE: gml:DirectedObservationAtDistance gml:validTime gml:TimeInstant gml:timePosition2002-11-12T09:12:00gml:timePosition gml:TimeInstant gml:validTime gml:using xlink:href=http:www.my.orgcamerasleica2 gml:subject xlink:href=http:www.tourist.orgsightsmountain3 gml:resultOf xlink:href=http:www.my.orgphotoslandscape1.jpg gml:direction gml:DirectionVector gml:vector srsName=urn:x-ogc:def:crs:EPSG:6.3:43260.0 45.0gml:vector gml:DirectionVector gml:direction gml:distance uom=m16500.gml:distance gml:DirectedObservationAtDistance 19 GML schema — Coverages

19.1 The coverage model and representations

Copyright © 2007 Open Geospatial Consortium, Inc. All Rights Reserved. 199

19.1.1 General remarks

This clause defines the GML encoding for coverages and is in agreement with the conceptual model outlined in ISO 19123.