A reference to a measurement feature associated with this feature: any member of thediggs:AbstractMeasurement substitution group, such as diggs:Test, diggs:Monitor,diggs:MaterialTest, diggs:GeophysicalFieldSurvey or diggs:MeasurementWhileDrilling.Given by reference only.
The gml:identifier value of the referenced feature, as a fully qualifiedvalue. It gives an alternative to the gml:id in xlink:href for findingthe referenced feature, mainly to reference a feature by a globallyunique identifier and where naming conflicts occur with gml:id whenaccessing data in external files.
<element name="measurementRef" type="diggs:FeatureReferenceType"><annotation><appinfo source="urn:x-gml:targetElement">diggs:AbstractMeasurement</appinfo><documentation>A reference to a measurement feature associated with this feature: any member of the diggs:AbstractMeasurement substitution group, such as diggs:Test, diggs:Monitor, diggs:MaterialTest, diggs:GeophysicalFieldSurvey or diggs:MeasurementWhileDrilling. Given by reference only.</documentation></annotation></element>