element Observation

diagram
namespace	http://www.opengis.net/gml/3.2
type	gml:ObservationType
properties	content  complex substGrp  gml:AbstractFeature
children	gml:metaDataProperty gml:description gml:descriptionReference gml:identifier gml:name gml:boundedBy gml:location gml:validTime gml:using gml:target gml:resultOf
attributes	Name   Type   Use   Default   Fixed   annotation id required         documentation The 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.
annotation	documentation The content model is a straightforward extension of gml:AbstractFeatureType; it automatically has the gml:identifier, gml:description, gml:descriptionReference, gml:name, and gml:boundedBy properties. The gml:validTime element describes the time of the observation. Note that this may be a time instant or a time period. The gml:using property contains or references a description of a sensor, instrument or procedure used for the observation. The gml:target property contains or references the specimen, region or station which is the object of the observation. This property is particularly useful for remote observations, such as photographs, where a generic location property might apply to the location of the camera or the location of the field of view, and thus may be ambiguous.  The gml:subject element is provided as a convenient synonym for gml:target. This is the term commonly used in phtotography.  The gml:resultOf property indicates the result of the observation.  The value may be inline, or a reference to a value elsewhere.

XML Schema documentation generated by XMLSpy Schema Editor http://www.altova.com/xmlspy