An abstract object that serves as the head of a substitution group forall sampling features. A sampling feature is a physical object or location throughwhich we observe or measure properties of an investigation target, or perform sometype of activity. It serves to define the dimensionality, extent, and local spatialreference system for zones where 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>An abstract object that serves as the head of a substitution group for all sampling features. A sampling feature is a physical object or location through which we observe or measure properties of an investigation target, or perform some type of activity. It serves to define the dimensionality, extent, and local spatial reference system for zones where observations or activities take place.</documentation></annotation></element>