Abstract head of the substitution group for sampling features. A sampling feature isa physical object or location through which properties of an investigation targetare observed or measured, or through which some type of activity is performed. Itdefines the dimensionality, extent and local spatial reference system of the zoneswhere observations or activities take place.
Database handle for the object. It is of XML type ID, so is constrained to beunique in the XML document within which it occurs. An external identifier for the object inthe form of a URI may be constructed using standard XML and XPointer methods. This is doneby concatenating the URI for the document, a fragment separator, and the value of the idattribute.
Source
<element abstract="true" name="AbstractSamplingFeature" type="diggs:AbstractSamplingFeatureType"><annotation><documentation>Abstract head of the substitution group for sampling features. A sampling feature is a physical object or location through which properties of an investigation target are observed or measured, or through which some type of activity is performed. It defines the dimensionality, extent and local spatial reference system of the zones where observations or activities take place.</documentation></annotation></element>